Wow, congrats to GR, Dodd, dB Audio, Triode Wire Labs and PI Audio!
I heard this system and it did most things really well. Also, the setup was great and the bass was under control so you could really hear what the system was capable of. Imaging isn't point source precise and the highs aren't as refined as a RAAL ribbon or beryllium tweeter, but it's good... nice clarity, detail extension without being annoying or fatiguing to listen to.
My only complaint, and it's a big one, is the refusal to play music brought in by show attendees. I really can't say with any degree of certainty how the GR system compares to others without hearing the same music on it. There were plenty of folks with 6-figure systems that were happy to play my test track, and that means a lot to me.