[warfangle]

Beyerdynamic DT660: http://www.amazon.com/beyerdynamic-DT-660-Premium-Headphones... (go for the 770 if you're in a quieter situation, as they're open-backed and you get a bit of a cleaner sound)

Grado is almost always a stellar choice. http://www.amazon.com/Grado-Prestige-Series-SR125i-Headphone...

Both cheaper than beats.

Both much, much better.

[stephencanon]

Grados are superb but nearly totally unsuitable for office use, as they're open. (Grandparent mentioned using his cans at work).