I had deathadder, great mouse but heavy. Now I have Steelseries Xai. Great mouse and for LANs really easy to setup(all settings stored on mouse itself, plug and play).
lolwat?? :P It just saves a profile on the mouse's internal memory so that, for example, at LAN you can just do 3 clicks to get the settings you have at home :D
get a deathadder, mx518 or an ime
http://www.elkjop.no/product/data/mus-tastatur/mus/LTR800PRO/logitech-r800
e: dunno how good it is for ET though compared to other mice