Got mine today after dealing with Colorware for seven weeks. Doubt I'll do business with them again, but their paint job is phenomenal! As for the HD 800s, they tend to drown out the bass in music, but I'm chalking that up to my Fiio E17/E9 combo and the fact they're fresh out of the box. A few days of break-in and the ASUS Essence One arriving on Thursday should give them a lot more breathing room.
I'd definitely put the HD 800 in the "atmospheric" category than "performance". I don't get the impression of a distinct sound stage in front of me like I did with the 555s; instead, it feels like I'm "surrounded" by the music, without it being "in my head" like many IEM's and cheap cans produce. It's definitely a trippy feeling, and my brain loves it (especially with some Paul Van Dyk or Eric Prydz). The cable feels much longer than the 555s, but nothing I can't manage (these are used in a desktop setup). About to fire up some games and see how they fare, as I really loved my 555s for gaming.
Using iTunes (no ASIO compatible gear for Foobar), playback of lossless and HD music sounded fantastic. I know a lot of people complain they sound bright, and there is that distinct sharpness on the highs, but they don't seem to live up to that reputation; could be the Fiio holding them back, though. Paul Van Dyk's Evolution album sounds great, though the lows are restricted by my gear. Pretty Hate Machine by NIN (1989 release) sounds very crisp and the various synths well separated; again, lack of bass by the Fiio. Immersion by Pendulum has the same symptoms of Pretty Hate Machine: everything is well differentiated, but bass just isn't there from the little Fiio amp!
You sure it's the Fiio?
Positive. Equalization or frequency boosting does nothing to the overall sound except heavily distort what little bass there already is.