If you're looking for some good but CHEAP closed headphones, check out the Senn hd 280 pro. The sound isolation of these 'phones is incredible (probably second only to etys). Surprisingly, the 280s have a very mature sound. While most closed 'phones are boomy with poor detail, these have a moderated bass spectrum with a crisp mid/high range. The impedance isn't too high, so they can powered out of most portables, but , as usual, an amp really helps them shine. Also, I would venture to say these are the BEEFIEST headphones sennheiser makes. And to top it all off, the 280s will only set you back $70 (amazon).
