I am currently running a pair of Audio-Technica ATH-M 50's. They sound very good, but their sound stage is pretty much non existent, and I find the bass to lack quite a bit. I listen to a lot of atmospheric, chill step, mellow indie, dubstep, and trance music with a little bit of pop / rap thrown in every once in a while, but not much. Since I listen to mostly mellow music, I love laying in bed with the lights off, or just relaxing in a chair with my eyes closed, and enjoying all that music has to offer. The M50's are great, but I'm looking for a pair of cans that really widens the sound stage so I can literally 'get lost' in my music and have it feel like the music is surrounding me. Also a bit of added bass would be nice, as the M50's seem to lack that.
Another important thing though, they NEED to be closed can. Because i'll be using them on the go occasionally and they can't be leaking so much that other's feel like they're plugged in... That goes the same with isolation. Preferably headphones that block out an acceptable amount of outside noise. Thanks everybody for your recommendations. Remember Under $250!