Also, I'd be remiss if I didn't mention the Fostex T50RP. They're very good out of the box but amazing if you don't mind putting in a little time and effort into DIY modding. Check out headfi.org for more on that.
http://www.amazon.com/Fostex-T50RP-S.../dp/B0002MT6RY

EDIT: Hmmm... I should ask what kind of a source are you going to be using for these headphones? Given you mention of Beats and Bose, I'm thinking a standard MP3 player or computer. This will matter very much in recommendations as no one will want to tell you to buy high impedance headphones for use with an iPhone...