I have used many combination headsets with mics over the years. Either the comfort was horrible or the quality was lacking. I tried on a set of Bose over the ears headphones and haven't looked back. Extremely comfortable, lightweight and well built. Can wear these for hours without knowing they are there. They aren't cheap however. In addition, I use a low cost mic attached to my collar which transmits very good voice signal.
Headset:
http://www.bose.com/controller?url=/...oe2_headphones
Mic:
http://www.radioshack.com/product/in...ductId=2811419
There may be better solutions out there but this combo is the best I've had.