WHAT WAS THE BEST SYSTEM YOU EVER HEARD AND WHY WAS IT?

@ big Greg that Raidho system was that one that did. I have a greatly matched system but that thing was about 600k of top of the line greatly matched!

8 track panasonic in my 1970 Dodge Challenger after smoking a couple of joints. 

At Audio Alternative in Ft. Collins, CO.  You can google the name and click on the site to see both his show room and private set up. His set up includes Vandersteen7 mkii, Vandersteen subs, main amps and other equipment I am not sure of.  Listening chairs are very comfortable leather about ten feet from the speakers.  He plays only vinyl, mostly jazz.
Get ready!  The system no longer is a source of sound, but the room becomes a musical atmosphere and the sonic performance is as natural as breathing.  All in all, an incredible
experience and needless to say, very! addictive. 
I am not affiliated with Rick or Audio Alternative except as a happy customer.

It is not the most expensive that is the more impressive, the Elac combo Debut, heard in Montreal audio show, was unbeleivable for his price.

Boulder Amplifiers a few years back at an International show in Tokyo; a million dollar ( retail price ) setup playing vinyl.  I think this was the debut of their exceptional Phono stage... the Show was very well attended and the style as an audience member was to queue and wait to enter the listening room; the door would be closed, a track or 2 would be played and then everyone would be shuffled out.  I queued twice. Sound is often described in textbooks as "Waves" and the sensation of listening to this extraordinary setup was like standing waist-deep in a perfect surf where the Bass gently buffeted you, the high notes like perfect foam bubbles at the top of pristine waves... it was Simply Gorgeous and I have not before, or since, experienced such a wonderful system Now, if I had a lazy million....