I owned these for years; and they, along with a JDS labs CMOY amp and my iPod, were my daily commute set-up.  They offered everything I wanted in a portable rig; great fit, excellent noise reduction, superb and natural sound.  I liked the small size, and the fact that they were barely noticeable when worn correctly.  I replaced them after a few years with a pair of Shures that sounded even better; but cost 3x as much.