I've upgraded everything this year except headsets.  New Asus LCD 1440p Gsyncs, new 970sli and 980 in both systems, new Corsair RGB Cherry Blue KB - I tossed the Razers as well, done with Chinese knock off switches and other problems.
I can't figure out which way to go with headsets.  I have 2 Steel Series right now, which are great for mounting TrackIR due to the width of the band, but nothing else about them is good. 
What should I get, I've read and been told SO many different things about gaming headsets.  Price = not really an issue, 400$ I would spend to get a good gaming headset that allows TrackIR to attach without too much modding and taping.  
I was going to get the Sennheiser 363D, but they have a USB 7.1 soundcard, and I've read conflicting things about that.  Looked at Roccats, Corsairs, TB (blah), Astra, and a few others.  What is the best headset for gaming out there in the higher end segment, one that isn't too touch for the trackclip to attach to?  I don't have a sound card, just on board with both Sabertooth boards, but I could easily add one if needed I suppose.
Anyone tried or heard much about the Beyerdynamic MMX 300?