I've used these for the last two years and they are superb cans. They're at least as good as the equivalent sennheisers for their acoustics and they're built superbly. They sound great for films, Xbox gaming, they work with Ipods and Ipads and they are very comfortable. I only really have three very complaints, and that is that they sometimes squeak against glasses because of the over ear configuration, occasionally the mic will work loose and rattle in the socket (just push it back in firmly) and for some reason the only external noise source it doesn't filter is the annoying whine that my case fan is making, but then they can't be blamed for that.
All in all a worthy contender.