I was only there about 5 hours on Saturday but @snapsc basically put my thoughts on the show into writing almost perfectly.
I was really amazed by the Apple Orchard / Soundfield Audio was the big surprise for me and one of the cheapest systems there. Amazing.
I really liked the Razz /Border Patol / Triode Wire Labs but loved the Rivals. I just purchased a pair about 3 weeks ago and wanted to hear Greg's set up and wasn't disappointed. One of my very favorite rooms.
@snapsc 's write up on Andrew Jones and the Mofi are exactly my thoughts.
Same with the Focal Utopias and crazy Naim mini-fridges. The presenter said that Focal bought Naim about 10 years ago (?) and that the mini-fridges cost $400k. The Focals sounded fantastic w/ some Santana song I've never heard before and for such big speakers in such a small room.
There were some other excellent rooms but those I remember the most. Oh and I walked into the Piega room and Tool was on and it sounded really, really good. The presenter was awesome and loves rock. He said something like, "when I listen to Exile by the Stones I want to hear the heroin come through the speakers". Something to aspire to with your system, lol.