Photon makes great points. head-fi.org is an excellent resource for headphone information. The guys over there are obsessed. I definitely recommend trying on several different headphones before you buy. If there isn't an audio shop near where you live, Guitar Center carries most of the major brands (AKG, Audio Technica, Beyer Dynamic, Ultrasone, Sennheiser). They don't carry Denon, which is one company that would seem to fit your parameters. Beyer Dynamic also has some models in your price range that would work.
Good luck.
Good luck.