This really comes to down to preference, but if you're going the wireless route what you want to look for is for decent battery life (20 hours or higher). The last thing you want to have a headset that's constantly needing to be plugged in because the battery life is bad. It kind of defeats the purpose of being wireless. For wired headsets you want to make sure you the cable is long enough to reach your PC without feeling like it's tugging on your head.