Just picked up a pair of Audio Technica ATH-M50s at Long & McQuade.
They've apparently got a 20-30hr breakin period, but out of the box these are comically better sounding that the Monster Beats Studios. For $160 less. It's incredible, really.
They're especially better most rock music. I found everything gets sorta jumbled together on the Beats but you can pick out every details of every instrument on the M50s.
The bass actually hits harder (when called for) on the M50s, but isn't as boomy. All a matter of preference.
Might not look as cool as the beats, but I still think they look pretty sweet:
My iPhone/MacBook drives the M50s just fine, but with the money I saved I'm going to get a NuForce UDAC 2 and really see what these can do.
ETA: Bonus! I don't feel like I'm going to break these every time I put them on!