Lots of good responses so far
I have personally not listened to a lot of the cans you guys are talking about, but I wanted to ask this question to see what would happen since I've heard about specific headphones being good for classical, jazz, or rock, but progressive rock can fall somewhere inbetween. Pehaps I can find a store in NYC where I can listen to a wider range of headphones, when I'm back in NY in August. I've listened to various Sennheisers and SR60s and that's pretty much it. My source is my computer through my newly acquired BitHead, which I am really enjoying. I've never heard Larks' Tongues in Aspic so clearly before