It is simply the best gaming mouse that I have ever tested to date.
What games have I played with the mouse: Starcraft 2 (rts) and Tribes: Ascend (fps).
The ability to quickly switch to another sensitivity is very significant when we play different games with different needs (Very sensitive to SC2, much less for T: A).
The shape and material are pleasant and quick start.
If I have never used this mouse for maximum sensitivity (> 11k dpi), it is nice to be able to rise above 8000 remaining accurate (especially on RTS).
Be careful with MMO players who may regret the many additional buttons on other mice such as the Razer Naga.
Slight downside: the coup bmp customized on a screen under the mouse, it's funny 5 minutes but I am skeptical about the interest and I hope it's not too up the price. Unfortunately, this is the price to pay when one is moving towards selling brands like "Gaming".