well, i am using the SteelSeries World of Warcraft mouse.
by steelseries. and i love it. 15 Customizable buttons.
i literally cant play WOW without it now.
tried the Naga with a friend and it's really good. i recommended it coz it's available here.

http://steelseries.com/products/games/world-of-warcraft/world-of-warcraf...