I'm still waving the flag of the AKG K 501!
For what it costs, for as easy to play as it is (meaning it doesn't require exotic outboard amplification, not that you can't hear the difference) and as comfortable as it is, the K 501 is a solid performer. For what I listen to, the K 501 is an excellent match acoustically and sounds very accurate.
Certainly the K 1000 is a product in a different class, but remember, the K 1000 isn't really a headphone, it's an ear speaker system!
