As far as impressions go I can initially say this, of all of the high end gear that was there the HD800 was the only headphone that I am now planning on buying. The Ether Flow was also a great headphone and worth buying, but it's out of my price range.
I don't feel that I had enough time with the Utopia (I made it my goal to listen to that headphone first, but I ended up listening to it last - goal failed), but my initial impressions is that it was a fantastic headphone, but I'm not sure it was $4,000.00 fantastic. If I had more time with it maybe my feelings on them would change, for better or for worse.
I had a great time with great people and great gear. Would love to do this again next year.
Thanks Kimble Kable for coming out. You allowed me to scratch off several headphones on my headphones-that-I-need-to-listen-to-before-I-die list.
Thanks to Richard as well for organizing, catering, and hosting the event.