Wear them for more than an hour and your ears will melt from the heat or be squashed to death.
Plus I find them rather inadequate near the 20 Hz range.
For dubstep as most people like now they are sufficient at reproducing sound but they are so uncomfortable.
I want to upgrade from mine but almost anything above will need amping and you will want nice headphones at that point.
I just can't see dubstep and headphones being a good pair unless they are amped.
Far too much low end for wimpy little drivers to really be able to displace enough air.
Until I see headphones that are built with an internal amp, marketing for dubstep will just be a gimmick imo.