I have had these headphones for a few months now and have used it almost exclusively over my other phones. Granted, these are not the best headphones around, but they are the best headphones I have heard.
Comfort:
These are the most comfortable headphones I have ever used. They are light and fit me well. They don't move around a lot and the fabric pads cause no irritation or discomfort. bear in mind I have used these in 30+ degree celsius temps in a very humid environment.
The problem with them though is that this comfort seems to come at a price of lack of isolation. They dont block much at all.
Sound:
Sound wise, after burn in, they are very well balanced. The bass is actually quite heavy, but not slow or overpowering. You don't notice this until you get a song with some nice deep bass and then you get a nice surprise. The bass is not very impactful, Don't expect this to hit as hard as the AKG K81dj.
The mids are clear and refined. not held back or recessed in any way compared to the rest of the spectrum.
The highs are clear and and crisp. Since burn in, I find the highs smooth as silk. At first they had some sting to it, but with burn in and amplification, the highs are no longer a tad harsh or overly bright.
All in all a perfect blend for me.
Test Equipment:
Source: Apple Ipod Touch 3g
Cable: Compicat LOD
Amp: Electric Avenues PA2v2
Music: MP3 ripped from cd at 192 kbps- 320kbps
Genres: Reggae, Alternative, Rock, R&B, Acid, Rap, Hip Hop, Pop, Jazz, Gospel.
Artists: Micheal Jackson, Seal, Coldplay, Radiohead, Jamie Cullum, John Mayer, Red Hot Chilli Peppers, Tarrus Riley, Third World, Madonna, Alanis Morisette, Audioslave, The Streets, Eminem, Will Smith etc.