can anyone recommend a very good gaming headset?

[Fenrisflyer]

As a comment to the wireless sets,

I tested a wireless logitech set(for mobility) before starting to play COD, but quickly went back to my old cabled set, the wireless had much worse sound quality than my standard low-priced cabled set.
Not sure if that is the norm but at least it's something to consider.

Also, if you are using TrackIR5, the ProClip is cable-connected to your computer so there is really not much benefit from a wireless set anyway.