My new favorite mouse is the deathadder 2013. I had many mouses over the years. My first real good mouse was a logitech mouseman dual optic. Incredible mouse with left side button just at the right place. The, after many other mouses I did not like, I got a razer naga hex. It's a good mouse, feels great, but my hands are a little too long and since I use a claw or half-claw grip (hard to tell, but no palm for sure), well my left thumb was on the other sides of the six buttons on the left of the mouse instead of on the center of them as it is supposed.
So after searching for a new mouse that would fit better with my hand and grip, I decided to try the deathadder 2013 and I am very satisfied with it. First, the new materials feels very nice, kinda grippy and sandy at the same time. Also, the shape of the mouse (same as old deathadder, but my first one so can't compare) is almost perfect for my hand. Found the right position on it after 1-2 hour only. Finally, the sensor is really amasing. Very hight precision and no problem at all yep.
Overall, I would recommend this mouse for anyone, unless you have small hands and don't palm!