First off, I just got off a 14 hour shift and I'm a little too tired to be very descriptive and detailed, but I'll do my best :). I have a pair of M-80's and I never was able to fall in love with them. That being said, the XS is the "new and improved" version of the M-80. There are a few key changes with the XS. The clamping force is significantly less and much more comfortable (while still staying firmly on your head). The sound is slightly different but quite amazing. One of the things I didn't like about the M-80 was that headphones produced a...