I got Super Smash Bros. Brawl recently and I wanted a GameCube controller for it.
Just a warning.
There are controllers that are actually GameStop's but have the GameStop logo replaced with another logo and repackaged as their own.
If you think yours might be one of these, look on the back.
On the circle where the C-stick is, it should have the manufacturer's name.
If it says GameStop, then you have a GameStop controller that was repackaged.
The GameStop logo comes off with a special tool, maybe a flat-head screwdriver, and you can put your own logo on it.