There's really no perfect headphone. You have to try out stuff before you buy it. Beats are actually the reason I got into headphones. I'll never forget it! Horrible, harsh treble combined with an over-inflated low end. It sounded like someone was hitting a cat with a bagpipe. If you want what audio engineers and musicians use, Guitar Center has PLENTY of quality stuff from Sennheiser, Audio Technica, Beyerdynamics, Klipsch, and even AKG.
Crappy piano http://www.youtube.com/watch?v=XOyaNG-qX8U