As Rich said, Sony Golds are pretty much the benchmark nowadays. I've had Turtle Beach PX21s (crap build quality, fell apart in no time), Tritton AX Pros (decent, sweaty ear cups though), Tritton Pro+ (also good, but wouldn't buy them again) and I'm currently using a pair of Astro A50s which are without doubt the best pair of cans I've ever used, an opinion which seems to be shared with all those who have them. Stupid expensive but worth every penny.