I use AKG's, they are very VERY comfortable. They all have the "automatic adjusting headband" *same stuff steelseries uses on the siberia v2.
http://www.akg.com/ (international site that leads to the country site)
http://us.akg.com/akg-product-detail-us/q-701.html (headphones of my dreams)
http://us.akg.com/akg-product-detail-us/k-142-hd.html (I have these, got them for 80$ when they were 200$)