The cans should be closed and less than $400. Used is fine. Would like strong bass but not at the sacrifice of sound quality (some small sacrifice is okay). For example, I consider the Sony XB series to be terrible. Portability and looks are not a consideration. Good soundstage is also fairly important.
This is what I have considered so far:
V Moda M100
Ultrasone Pro 900
What do you guys think?