The new G5 mouse by logitech, Laser engine at 2000 dpi and wireless specifically designed for gaming. It's gonna be released next month.
If you want absolute performance for gaming you need wired ofcourse. I'm gonna buy the Razer Copperhead as soon as it's released, next month also. It's got Led's on it that are making it look like the mouse is breathing. It's also Lazer ofcourse.