Color your existing system and controllers for $100, or just a controller for $25.
If the PS3 didn't look so good in black (and the fact that I've recently had to return it...), I'd consider this. I'm still considering getting a controller done in prowler.
It was randomly overheating on power-on, regardless of whether it had been recently in use. It sits in the open, too, so it's not something else's heat. Probably a fan startup issue. I got a replacement and it works fine.