I've had a pair of Alessandro MS-1's (basically a Grado SR80) for a couple of years and they're great. Some people find the Grado sound a bit too aggressive and prefer the laid-back presentation of the Sennheiser HD600 or HD580 (which is *too* polite, for my tastes). For a sealed headphone, give the Sony V6 a whirl... These are all big and chunky 'phones so if portability is a great concern, I'd go with the Koss or the Sony E888 earbuds...