I was also at the Montréal audio show and I agree with your comments. This setup gets my vote for the cleanest and deepest bass I heard. They could have used a larger room though.
I do agree regarding the Gershman Opera Sauvage. They certainly get my vote for one of the best demo. I haven't heard their Cameleon speakers but if they're every bit as good as their other models they're certainly worth a listen (I do own a pair of Gershman Avant Garde RX20). However, my vore for best sound would have to go to the Kharma/Tenor Audio room (hooked up to an Audio Aero CD player I believe; it's a safe bet, Audio Aero was in almost every ultra high-end demo). These new hybrid Tenor amps hooked up to the Kharma speakers were simply mesmerizing. I must have stayed over an hour in that room. I can still remember the sound of these soaring violins playing......just plain enthralling!!!
The Kharma/Tenor room was hooked up to a digital front end comprised of a Meitner-modified Philips SACD1000 SACD player and Meitner EMM Labs DAC6--the first DAC for DSD. This was the room in the Four Points Sheraton. There was another room--the RL Acoustique room (the company behind Tenor) with Tenor Audio monoblocks in the Delta, which DID feature the Audio Aero Capitole, driving a pair of LamPipe speakers by RL Acoustique.