Good thoughts, thanks. I'm actually asking my friend to bring the 558s into work so I can test them a bit. Those keep getting recommended and the price is definitely good. I think my only concern at this point is sound leakage. If it's not too bad they'll be a win. If it's really bad then I may have to start looking for a closed pair. I don't want to disturb my family with gaming.
edit: Any thoughts on the HD380s?
http://www.amazon.com/dp/B001UE6I0G/?tag=neogaf0e-20
If you want a big bang for your buck headphone check out the Gemini DJ HSR-1000
Or you if you have a little more money to spend these are amazing and are semi-open, which means they leak but not as much as a fully open headphone:
Somic MH463, make sure you get some replacement pads though