The Logitech G15 is the best there is , for a price.
http://www.logitech.com/index.cfm/ke.../3498&cl=US,EN
All so the Logitech G9 mouse -- I use this, is very good aswell.
http://www.logitech.com/index.cfm/mi.../3053&cl=US,EN
Both are about 90+ AUS dollars