I'd probably will get some flame for this of all those boselcholics but here we go:
My recommendation is go for Sony Mdr-V150 (only $25 if you get it at bestbuy or $16 if you order it online in some site such as ebay or amazon, NEW.)
Before you tell me anything about quality let me tell you a little secret, I am a music student (been since I can remember, and not that crap of DJ or electronic/loops sh*t, the real deal, instruments, chorus, etc) and therefore my earing sense is quite sensible, and trust me you wont get any better than Mdr-V150 even if you pay $10,000 the only better than that is to bring the whole band to your room, and its not only me, my music teachers also agree (not that the Mdr-V150 is better but that all those extremely expensive headphones is just a better way to rip you off).
Now, im not saying that they got no better quality and fidelity dont get me wrong, they obviously do, its your ear (and for that matter your brain) the ones that cant keep up with the quality.
So save your money, get a good n' cheap one. Some people find its not extremely constable, if so then go for a different one, but my recommendation get a 15-30 one, also my bro uses it the whole day and he has never complained (I just use it 1h a day tops so no unconfort report from me either.)
Please again if you dont agree with me, dont make it personal, in fact dont reply my post at all, just go and spend some $300 and be happy.