This was my first purchase from EdenFantasys and I couldn't be more pleased. The Ako is just as powerful and versatile as it is advertised. I loved that the buttons are held down to gradually increase the intensity of vibration because it allows for more personalization, as apposed to settings you click through on most battery powered vibrators, where you can really get it just right. The different "patterns" can be used to draw out your orgasms or keep you guessing (as with the randomized final vibrations "pattern"), which makes for varied but always powerful orgasms. I loved that as you get more turned on you can increase the speed of the pulse or slow things down with the wave vibrations. I love to bring myself to the brink and then ease off; I found the settings perfect for that.

Another thing I found enjoyable is that you can either use the "front", which comes to a smoothed point for more direct clit stimulation or the back, which is wider and flatter. Even though it is small, the Ako packs a punch that satisfies a need for strong vibration. It is completely silicone (except for the screw-on handle/battery cap) and is easy to clean as long as you make sure the inside of the toy is completely dry afterwards. 

The only complaints or problems I have are that you probably should avoid using this underwater as I doubt it is water-tight. I have not used it in the shower but from cleaning it, I am confident that that would be fine. Also, it is true that the buttons will most likely get lube on them but I found them easy to use even when slicked up. In terms of noise, this is not something you would use in a dorm room but that's the price you pay for battery powered vibes that are this strong. However, it is not especially noisy, so if you live with roommates and you're shy, some music or other background noise should work fine.