Well, been extremely busy at work, but I've gotten some time logged in on these. I've also done a little a/b between the headphones I currently have. I have to say they are a very enjoyable headphone. Very flawed, but its a case where the flaws are less a detraction as the positives, in fact, its kind of a case where the flaws accent/create the positives.
The flaws, bass is sort of off, I dont want to say one dimensional, but it is not great at all frequencies. Which is almost a mirror image of the treble, very uneven. Mid's are flat as a board, but kinda plain, they don't stand out in any particular way. All of that sounds pretty harsh, but that being said, they are fun headphones, the treble spikes really help to push the instruments well out to the side, while keeping you very near the center of the stage. Very nearly every headphone with good instrument separation that I have heard have come at some cost to the sound, usually sounding either really anemic down low, or just borderline unnatural particularly in the mids where vocals should be, and consequently sounding like you are too far from the stage. Somehow these headphones have kept some bass down low while keeping mids very natural and right in the center, and a great wide stage. The sometimes harsh treble is the double edged sword that allows this to happen, and for me it is a trade off I am willing to keep, because it is just fun, like being at the concert right up front.
For classic rock, hard rock, metal, these are exceptional, enough weight down low to give drums a kick, enough treble up top to make the cymbals brash and clear, vocals are fine, unaccented but very clear, and all while maintaining very clear instrument separation. I even enjoy chamber music and some of the smaller orchestras just because of the instrument positioning, even if the sound is far from analytical.
Will they replace my other headphones, probably not, but I will definitely keep them in my rotation, actually thinking of making them my full time work headphones (I work approx 80 hours a week) so thats a pretty hardy recommendation on my part, though I only get to my desk about an hour in the am and for roughly an hour before I get off. I wouldnt cry if they got broken or missing, but I will definitely enjoy them and look forward to using them as often as I can. I dont regret the purchase of these headphones at all, though, I got them at a very good price, I dont believe I would have felt the same if I had paid full price.