I made a thread before but I think I had my question wrong. I've pretty much narrowed down what I want to Sennheiser HD555s and Audio-Technica ATH-M50s.
I'm looking to get some headphones that have a decent soundstage for FPS gaming. I will also use the headphones for movies and listening to music while using my computer/studying (with my ipod).
I'm leaning towards the M50s because of the closed back so I could use them at school rather than just in my room at home... but I'd put up with other headphones at school and get the 555s if the M50s are going to be no better than playing games with my TV speakers.