Let me start by saying this is my first "gaming" mouse. I've always used stock mice that came with my computers until I finally decided to buy this mouse from Razer. The first thing I noticed was the comfort. Using it for a long period of time didn't leave my hand feeling tired like some other mice. Its also very quick with the movement. Barely moving the mouse will take the cursor across the whole screen where normally i'd have to move my mouse across my whole mousepad. I'm so glad I purchased this and can't wait to buy more for friends.