True. But in all fairness, I've gone through 4 Naga now and never regretted buying them - coming from 2-3 button mice in the 90's there is no contest (especcially for spriest/lock pvp where I need a ton of /arena1/2/3 keybinds).
I hear the Logitech version is much sturdier though, and in the 90's I did swear by logitech opticals though - so my next one might be the logitech. The long story though is that MMO mice (with the wealth of keys on the sides) are or should be mandatory for competitive arena IMO (but that could just be the classes I play).