I know quite a few people that have the Razer Onza gamepad for Xbox and, while they are adamant that it gives them an edge in competitive gaming, it keeps on breaking. One of them bought a new one yesterday and the other one's in for repairs, again.

Another thing is most competitive gamers don't like wireless. I actually read up on some of the pads last night and apparently there is something called "slow turn" which is the bane of any competitive gamer. :P

The new MLG madcatz controller is nice because it gives you the freedom to play on a controller with a ps3 layout on an xbox and vice versa.

These controllers are typically also R100 + cheaper than the first party controllers.