I am a graphic designer and plays many games Starcraft II and other style. I am a long time before my computer using my mouse. My previous mouse hurt my wrist in their grip. The Razer Death Adder has changed everything! ergonomic, soft to the touch, this is the mouse to have for long use. And for the handling, I admit it takes a little time to adapt so it is fast and sensitive keys. But the utility (although not very intuitive in its interface to it) allows very well set the sensitivity and macro applied to the keys. I hesitated with Razer Mamba ... But frankly the Death Adder laaargement enough ... especially for the price ...