Spent months casually searching for the ultimate portable headphone for iPod use. The earbuds are heinous to all but those who know no better. Finally took the iPod to a decent audio store and went through their considerable selection of Grado, Sennheiser and others I do not recall. This is not a true portable set of cans as they do not fold, are not super lightweigh and are physically larger than what is considered portable. However, they do sing. Very reasonable resolution and imaging. And finally I found a phone that could reproduce some solid non-boomy bass.

You will not run with these or do other sporting activities, but for walking or other non-violent activities these are great. They are open so will not block out external noise.