HiRez said:I also have to put in another recommendation for the Sony MDR-V6s. Not only do they sound great, but the are very efficient and easily driven, so you will have no problem using them with any portable player and you will not need a headphone amp. BTW, the MDR-7506 are identical except for the gold plated connector. Don't waste your money on them, as the original V6s can still be had for significantly less. You will not be disappointed with these phones. They're also extremely rugged (hauled mine all over creation for 15 years now), and fold up, but the only flaw is the thin black "leather" coating over the ear foam will eventually flake off, but it's not a show-stopper and you can get replacement ear foam from beyerdynamic phones that fit if you really need to. Don't be fooled by other Sony headphones with similar model numbers, many of them, even some with higher price tags, are really quite bad and completely different animals.
And if I didn't already mention, I too use a MDR-V6. My first, and last head-fi phone. I got a refurb for $40. Great bass response, not necessarily of Senn quality, but for $40? I'd take it.
Great for gamers/overall music listeners. If you wanna specialize, its going to cost you.