I've never had a problem with my sidewinder, and Microsoft gives a 3 year warranty with them so its a bonus. It is a larger sized mouse so if you have small hands it might give you some issues....
If your on a budget check this guy out..My buddy has it and does not complain at all.. http://store.razerzone.com/DRHM/sto...usa&Locale=en_US&Env=BASE&productID=169414800