I think you should hear the Sanders Sound Systems 10D/11D electrostatic speakers.
The Volti Audio Vittora was superb sounding speaker
http://www.voltiaudio.com/vittora.shtml - a must listen.
Another must listen is the Classic Audio speaker
http://classicaudioloudspeakers.com/cgi-bin/index.pl?fs=2&upper=27&content=28. usually played with Atma-Sphere electronics.
Of course, make sure you visit the Odyssey Audio room - Klaus himself is always there & happy to engage in a conversation. He often gets the best sound of the show or something very close to that.
Make sure that you attend the 30-minute closed-door session at Wilson Audio. If nothing else just the choreography of that dog-and-pony show is terrific - not a hair out-of-line, all speakers (people) stand to attention when Dave Wilson calls out their name to take the stage, hell, the son even shed some crocodile tears thanking his father for everything & professed that when he grew up he wanted to be like his Dad! You have to see this show.....
(This year neither Green Mtn Audio (time-coherent, 1st-order x-over speaker) nor Lansche are going to be present. They were present last year (2013) when I attended & I heard both speakers - simply terrific sonics.
Another manuf who's not attending is Sceana Speakers - last year they were in the Hilton across the street & their line-array speaker was very, very good sounding.
Audio Physic was another speaker I enjoyed - not there this year.
Brodmann Acoustic was another speaker I enjoyed - not there this year.)