Tonian Labs out of Burbank had one of the best rooms, especially considering it's $9500 speakers with a $4k Denon integrated amp .. as good or better than rooms 10x the price... By far the most transparent room in the show at any price...
The J.Porter powered speakers from Austin were really good at $15k/pair too, Songer Audio from Oregon was also great but your getting into $40k pair speakers.