So, I consider myself somewhat knowledgeable about mice. I went through 4 mice previously before settling on my current mouse, the Logitech MX518. I had never really payed any attention to mice before about a year ago, just like I never really payed any attention to keyboards before finding GH. So, I just assumed I would like a palm grip because I have big hands and never really payed attention to my grip in the past. Got a Microsoft Sidewinder X5, didn't like it because my pinky wasn't supported at all. Got a Kinzu, too small for me. Got a Logitech M500, didn't like the wheel and the shape wasn't great. Finally I settled on the MX518 because it's huge, curvy, and supports my hand well. Surprise surprise, like 3 months after getting this thing, I'm finding I grip my mice in more of a claw/fingertip grip than a palm grip. I'm also finding that I find the MX518 almost too large. The scroll wheel can also be a bit wonky. I've always thought that small mouses were for small hands, but apparently that's not always so.
Also, how do you guys feel about mouse coatings? The Kinzu has a rubberish coating which i really liked, and the MX518 has this shiny smooth coating on the palm and fingers part which I don't really like (it makes my hand sweaty and gunk builds up easily on the sides). I really wish the Xai was cheaper. I loved the Kinzu. In fact, I might even re-try it. I also really want to try some Razer products, because everyone who has them seems to love them.