The FemmeFunn Booster Bullet is one of my strongest bullet vibrators and has a good range between low and high. 

I don’t consider many bullet vibrators’ top strength “extreme,” but the Booster Bullet is one I do. 

It reaches a 9.5 out of 10 on its top power level. I never need to use this setting because even the second level is intense. The Booster Bullet has about 5% more power than the cheaper FemmeFunn Ultra Bullet – though the Ultra’s 9 out of 10 top power is strong enough for most people. Depending on your budget, it might be worth saving the $20 going with the Ultra Bullet for the minimal difference.

There are better choices than the FemmeFunn Booster Bullet for those who need mild stimulation. Its lowest power is 4.75 out of 10 strength – it begins with a fair amount of power. If you need more gentle settings consider the Lovense Ambi or BMS Swan Maximum if you like buzzy vibrations. Or the We-Vibe Tango X if you prefer rumbly vibrations.

As someone who enjoys moderate to intense vibrations but nothing too extreme, I find the Booster Bullet’s starting level perfect as a warm-up. I spend a lot of time with it because you can vary how intense it feels by applying more or less pressure. Or by changing how direct the stimulation is on your clit.

Then, when I switch to the second power level, I’m ready for its strength and don’t find it overwhelming. This setting is around my ideal strength to finish.

The We-Vibe Tango X has an excellent power range that provides gentle, moderate, and strong power levels. It begins with 2.5 out of 10 vibration strength. The comfortable soft settings are great while warming up or for those overstimulated by intensity. 

The upper power levels are strong, reaching a 7.75 out of 10 strength. I easily orgasm with the Tango X but typically use its top setting. There are some with more extreme power, like the FemmeFunn Booster Bullet or BMS Swan Maximum Bullet, for those who crave immense intensity. But I don’t personally need more strength than the Tango X provides.

The Tango X has improved on the original We-Vibe Tango in that it has 8 power levels instead of 4. So, the new model covers its power range more completely with many gradual steps between intensity levels. You can work up to its top power very slowly. Or if you’re easily overstimulated, you have many gentle or moderate power levels to enjoy. 

Most people will enjoy the We-Vibe Tango X’s vibrations. Few bullets have as wide a range of power as this one.

We rate rumbly vibrators higher than buzzy ones because it’s what most people prefer. But others prefer buzzy vibrators, so go with what you like! 

The FemmeFunn Booster Bullet is buzzy. Only the lowest power level is in the rumbly range. The two highest settings are moderately and extremely buzzy. This buzziness makes the already powerful vibrations feel even more intense.

I personally enjoy the Booster Bullet’s buzzy vibrations – it’s one of my favorites. But those who want deep, rumbly vibrations will want to go with the We-Vibe Tango X instead. It’s the most rumbly bullet I’ve tried. Although not quite as strong as the Booster Bullet, it will be enough strength for many people. 

Vibrations typically become buzzier the stronger they get. None of the bullets I’ve tested that have extreme strength like the FemmeFunn Booster Bullet are rumbly. So consider whether you value rumbliness or intensity more.

The We-Vibe Tango X is the most rumbly bullet vibrator I own. This is one of the main reasons to consider this bullet. 

Its rumbliness is especially impressive considering the Tango X’s strength. Vibrators become buzzier as you increase power. But even its top setting (7.75 out of 10 power) measured at 58 Hz in our test results, which is extremely rumbly. No other bullet besides the Tango X and Tango had more than 5.0 vibration strength while remaining under 60 Hz (our threshold for the “extremely rumbly” range).

Now, rumbliness vs buzziness is a personal preference. Although most people prefer rumbly vibrations, some want neutral or even buzzy vibes. If that’s you, consider the Pillow Talk Racy if you like neutral vibrations or the Lovense Ambi for moderately buzzy vibrations.

The We-Vibe Tango X is the best if you’re like most people and want those deep-feeling, rumbly vibrations. If you enjoy larger toys with more extreme power, you could also consider the We-Vibe Wand 2 – one of my best wand vibrators with exceptionally rumbly vibrations.

The FemmeFunn Booster Bullet is neither broad nor particularly focused – it’s a happy medium. The relatively wide tip (nearly an inch) is broader than many bullets with a typical lipstick or tapered shape. And it’s rounded, making it feel broader too. This makes it comfortable for firm pressure because it’s more evenly distributing that weight instead of feeling pokey.

But it’s still narrower than several bullets and other mini vibrators like the We-Vibe Touch X. The tip is small enough to isolate vibrations to a reasonably small area, or you can use the side of the bullet to spread that out and cover a bit more space.

The We-Vibe Tango X provides focused stimulation due to its thin width (0.69 inches) and lipstick-shaped tip. The lipstick tip comes to a fine edge that you can use to target the vibrations into an exact area. 

Rumbly vibrations travel deep into the body and feel like they naturally impact a more significant area, so limiting the contact to a particular spot is nice.

If you want slightly broader stimulation, you can use the long side of the Tango X to spread out the contact area more.

The FemmeFunn Booster Bullet is very comfortable, and the buttons provide good control.

The length is excellent for maneuvering without taking up too much space or cramping your fingers. The form is flexible, which makes it comfortable to press against your body. This flexibility means you need to shift your fingers and use them to press closer to the tip if you want extra-firm pressure rather than leveraging it from the base as you would with a rigid bullet.

The vibrations travel into your fingers a bit when using them to press near the tip (where the motor is located) for extra pressure, but it’s nothing too distracting.

You cycle through the 3 intensity levels and 17 patterns using a single button on the bullet’s base. This is less convenient than bullets that let you toggle forward and backward with separate buttons, like the We-Vibe Tango X. Still, the Booster Bullet is more advanced than other cycling bullets because of the Boost button and memory system.

The Boost button lets you quickly jump from wherever you are in the cycle to the top steady intensity level. So basically, whenever you’re on the edge, tap the Boost button to take you the rest of the way. In addition to the slight power increase, the Boost button is this bullet’s other upgrade over the FemmeFunn Ultra Bullet. If it doesn’t seem worthwhile to you, you can save some money and get the Ultra.

The Booster Bullet also has a built-in memory system (as does the Ultra Bullet). The next time you use the bullet, it will pick up at your most recent setting. That way, if you have a favorite setting, you won’t need to cycle through all the patterns to find it again. 

And for those who prefer warming up on the gentlest setting, the next click of the button will take you directly to the lowest constant power level.

The We-Vibe Tango X is an exceptionally comfortable and easy-to-use bullet. 

It has better controls than other bullet vibrators. Unlike most bullets, which offer a single button to cycle through all the intensity levels and patterns, the Tango X has separate buttons to increase and decrease power; and a third button to move through its vibration patterns. 

The three buttons allow you to quickly access your desired intensity or pattern and avoid annoying disruptions searching for your favorite power level.

The rigid form makes it easy to leverage and apply pressure even with its average length. I love the silicone grip on the handle, and the vibrations do not travel much into my hand, so it’s very comfortable.

This bullet works amazingly well during sex. It’s a great size to slip into tight spaces without taking up much room or bumping against your partner. Its round tip and flexible form make it especially comfortable, even with heavy movement during sex. It flexes with your body to remain in comfortable contact with your clit (directly or indirectly). 

It’s also a reasonably long bullet, so I don’t need to keep my hands too far down during sex.

The We-Vibe Tango X is awesome during sex! The rumbly vibrations travel deep into your body, so you don’t have to worry about placing the bullet in a precise spot. The thin, focused tip lets you easily slip the Tango X into tight spaces, and it maintains good contact wherever you place it.

I like that the Tango X is a bit longer than the original Tango because it makes for a more comfortable grip. You don’t need to pinch the end with your fingers; the handle has more space to sit comfortably in your hand so you can leverage the Tango X more easily. 

This length also helps to limit how far you have to reach during sex. But it’s not so long that it bumps against my partner’s chest or gets in the way.

The FemmeFunn Booster Bullet has good, quiet noise levels. Our decibel readings were lower than the average bullet – this is especially impressive considering it’s one of the most powerful I’ve tested.

We also test whether someone would hear the bullet on the other side of a closed door. My partner stands directly on the other side of the door while I use the bullet in the bedroom.

The first two power levels were completely inaudible, but my partner could just barely hear it on the highest setting. This is the note he left in our testing spreadsheet word for word:

“This was just barely perceptible on high. I had to try really hard and wait for sounds outside to become extremely quiet. I doubt anyone would actually hear in typical use.”

Turning on a box fan or music solves this problem completely, so you can use this to mask the noise if you want to use all power levels.

The We-Vibe Tango X’s noise performance is mediocre and may be disappointing if you’re especially worried about discretion. But there are ways to make it completely unnoticeable.

When measuring the Tango X’s noise with a Sound Level Meter, the Tango X’s vibrations measured quieter than the average bullet vibrator. However, when I hold the Tango X loosely in my hand, it will occasionally make a rattling sound that my partner can hear while standing on the other side of our closed bedroom door. 

When you press the Tango X to your body or grip the bullet more firmly, the rattling does not happen. And the rumbly vibrations themselves are inaudible from the other side of the closed door. If you don’t want to be distracted focusing on keeping the Tango X pressed to your body, you can turn a box fan on or play music in the bedroom. Both options successfully masked the rattling sound so my partner could not hear it outside the bedroom. 

The We-Vibe Touch X is my quietest mini-vibrator if you’d like a more discreet option. Otherwise, the Tango X just takes a little creativity to prevent nosey housemates from hearing.

The FemmeFunn Booster Bullet is rechargeable and lasted 85 minutes on high power during our testing. It has the longest battery life of my “extremely powerful” bullets. And if you also use the lower or middle powers occasionally, you’ll prolong the lifespan even more.

The We-Vibe Tango X is rechargeable with one of the longest-lasting batteries of any bullet vibrator I’ve tested. It lasted 105 minutes on high power during our test – especially impressive considering its excellent vibration strength. The few bullets that lasted longer, like the Dame Zee and Satisfyer Ultra Power Bullet 5, are weaker than the Tango X.

It’s a great option if you forget to charge your toys between uses or enjoy long sessions!

The FemmeFunn Booster Bullet has excellent build quality. The body-safe silicone is smooth and comfortable. The ABS Plastic housing the motor also feels solid. It has some good weight, making it feel more durable than cheap, lightweight bullets. The silicone buttons also feel well-made. 

The flexible part is a little squeaky, which is not as luxurious as I would hope, but it hasn’t caused me any issues. I’m comfortable applying firm pressure without worrying about damaging the bullet.

The We-Vibe Tango X has excellent build quality. The silicone handle and buttons are a nice improvement on the original Tango. The silicone adds some padding, which reassures me that it’s less likely to break if I drop it. And it adds a luxurious feel and grip.

The ABS Plastic is comfortably smooth and feels sturdy – not overly lightweight or cheap. The bullet feels well-made overall.

Since the Booster Bullet is entirely waterproof, it’s very easy to clean. You can completely submerge it while scrubbing it with soap and water. No worrying about damaging the toy.

The We-Vibe Tango X is 100% waterproof, which makes it very easy to clean. You can submerge this bullet while scrubbing it with soap and water without fear of damage.