I bought this about a month or two ago It's very powerful and takes some time to get used to. I think I would prefer the other one with the rounded head on it. Sometimes I feel as if there's not enough direct pressure all the way around .. I have a way cheaper version (of course not the same , but same idea) and I always seem to reach back for that off brand one. Either way , once you figure it out it's great.. for me it just is taking a little bit of time to figure out.. great quality and battery life.
Unique is best way to describe. You have to hit the spot just right and the sensation is hard to describe. Definitely a good buy if you're using multiple devices. We would recommend!