Logitech G5 Laser Mouse (2007)

Pros: Great button placement, wheel works really well in-game, love the on-the-fly sensitivity adjustment. Not too expensive: ~50

Cons: Sometimes is painful after holding it. Maybe I played too much? The edge on the right side of the mouse seems sharp and digs into my hand. I've tried a couple of different ways of holding it and eventually sorted it out.

Summary: Bought this after looking at online reviews, and many people seemed to like it. It has a great feel to it, lots of grip, has this crazy little tray of adjustable weights that pops out the bottom so I can adjust how heavy it is. But occasionally this tray will fall out. I love the software that comes with it, makes the mouse fully customizable. It is lighting quick too, an advantage over wireless mice that sometimes can lag out on you. (Which is not good in multiplayer) One of the edges is a bit sharp and depending on how you hold the mouse, can get painful if you're not careful. Try a few positions out, keep gaming sessions under 10 hours and you'll be fine.