I used to use deathadder but went through 3 of em within 2 years during college... mouse 1 button keeps screwing up.

Was using this before my new laptop:

http://www.amazon.com/Logitech-Ergonomic...ball+mouse

This is what I use now since the ball had too much shit on it and needed a usb mouse:

http://www.amazon.com/Dell-X7636-Button-...ball+mouse

Logitech felt better though honestly...