I've been using Bose-x for 4 years, now have four of them, and they are excellent. I have worn them for up to 5 hours at a time (8 hours with a short break) without any problems - could never do that with the top-end David Clarkes then costing £500.
Bose-x are overpriced and not rugged enough for a "club" environment, but for owners they are the best and have the lowest earcup pressure.
I have converted all mine to the aircraft powered versions - possibly only if the aircraft can be thus modified. The mod is actually very simple (just drilling a hole and fitting the aircraft-powered socket) but some may not like it.