A friend and I use VOIP while playing MMO's etc using either Message, Skype or Google Hangouts. He uses a USB headset and I don't. He recently replaced an older iMac with a new one as well as getting a new headset but he's still having the issues of his voice transmission sounding robotic at times. From what I've read this is a common issue with USB headsets on the iMac. Does anyone have any experience with this? I've read that some USB headsets work better than others on the iMac. He just recently got the Razer Kraken 7.1 and is having tons of problems with it. I read a comment from one person on a thread that they have a Steel Series V2 Frost Edition and it works fine. Anyone have any suggestions on gaming USB headsets or experience with the Razer Kraken 7.1?