Seem affordable. Is the output balanced enough for prog rock n the stuff WE listen to?
They're fairly neutral, maybe lacking a little on the bass side for that big kick punch, but that doesn't matter much for rock. EQ can fix most of the problems imo. They sound too relaxed and slow without eqing the mids down for rock/metal. Stuff like Daft is awesome too, but the bass probably is lacking a little to get the full experience for electronic music. You can turn them up for pretty good bass but they distort a little at this point. Hardly noticeable though... The treble is quite nice too, not harsh and quite clear.
Generally, they sound awesome as long as you get an EQ on it. Unless you really love massive bass and would use them for a lot of electronic/hip-hop etc I'd recommend them. Although, I'd say they really aren't tight enough for really fast stuff like thrash metal. The drums and the guitars get muddled together and there is not enough of a clear distinction between the two.
The sound staging is awesome, they give a really good stereo spread. Love the way they can make things seem towards the back or front and far left/right. One of the best headphones I've heard for this. And I've heard (no pun intended

) these give the best sound staging in the price range.
They sound much better after the break in period too, when I first got them I thought they didn't sound too good, but after about 5-10 hours they improved drastically. They're still improving now too, I heard max break in is about 100 hrs and I've only had them less than 1 week.
And I forgot the best part.. the vocals in these


I've never heard vocals sound so vivid before, I'd recommend them alone for this!
In terms of comfort, they very comfortable as long as you don't have large ears (mine are fairly small) and are extremely light. They do make your ears overheat a bit after extended listening, but nothing too annoying. The noise cancelling is quite good and I'm pretty sure most of the sound doesn't get out too, so other people can't hear you mostly.