What is the best sound system you ever heard?

Having heard systems of price ranges going well into 6 figures, got to say it's still a remote facsimile of live. Moving beyond that, I think my system is pretty excellent. 

Nothing is more absurd than to compare recorded music to live, yet people do it all the time.

Easy for me to answer; this Magico/Solution system I described a few years back:

https://forum.audiogon.com/discussions/2c-hifi-epiphany-worlds-best-system

Nothing has come remotely close for me. Returning to the realms of reality, this is my current 2C analog/digital system that sounds and looks fantastic to me:

https://systems.audiogon.com/systems/7324

I have listened to many great systems over my 40 year quest for perfect sound. The one that stands out for me was the VAC room at Axpona last year, with the largest sound stage I ever saw.

@orpheus10, but even after a hundred years or so that's one of the hallmarks, a key reference point of all audio (domestic, film, broadcast etc), isn't it?

Of course you can't reproduce the  acoustics of the Albert Hall in your car but you could still get an idea, couldn't you?