I have a pair of BARELY USED Tritton AX 720's.
AWESOME HEADSET FOR XBOX 360, PLAYSTATION 3, AND PC.
For those of you who don't know, these are some of the top of the line gaming headsets. My competitive gaming days are over, and sadly I barely got to use these do to college kicking my butt. My loss is our gain. Comes with a brand new 4ft Fiber Optic cable, and the cord to hook it up to your Xbox 360 and PS3.
The ONLY problem I had with these is that people said my voice was a little quiet. But when I was in a private party for Xbox Live people said it sounded just fine. Here is a link with some info about it.
GameShark® Store - Tritton