I've got 2 "real" pairs of headphones, AT-A900s and SR-80s. I like both, but my SR80s are uncomfortable after an hour or so. I think it's just the sound signature that doesn't fit with my ears, of course that's not to say I don't like it, hehe. I've been contemplating replacing them with another pair of open headphones, but I don't quite know what to replace them with. I primarily listen to electronica/trance, rock, metal, soundtracks/games. They'd be used directly out of my Xonar DX on my computer; I don't have a dedicated amp yet, and really am not looking at one (right now). I'd say first and formost they would need to be comfortable for long periods. I like my A900s but they feel "heavy" to me, my roommate has the AD700's and they feel light and kind of airy (sorta what I'm looking for comfort wise). I'd say budget-wise no more than 400 (absolute hard non shifting max ). Any ideas?