I tried this mouse out and I didnt like it that much. The driver is not as good as the logitech ones. Logitech lets you set speed and acceleration, this mouse only lets you set speed, so you are stuck at the same acceleration no matter what you do. In games there was no way to set it so that the speed was comfortable, and finally it is fatter than the mouse I am used to. Felt awkward compared to my logitech. My advice, spend 30 more bux for a G5.
It is a good find though, if you dont mind it being fat and dont have the 50 bux for a G5.