The search is over :) For a long time I've been looking for a foldable closed headphones that sounds fantastic and is easy to carry around for my travels. The KEF M500 has everything I need. First of all, it sounds great in all genres. I've tried pop, rock, classic, jazz, heavy metal, opera, and it handles everything well. The sound is much more open and natural than other closed headphones I have tested, it's quite neutral with a little tilt up in the upper bass and a little down in the upper treble, just enough to make it sound bigger than it is...