The best speaker you ever heard?

Green Mountain Audio flat out makes everything else I have heard sound bad. I've heard a lot too. I was in the retail high end audio business for 8 years. I'm also a musician. Nothing speaks to me musically like Green Mountain Audio.
'Nuff Said.

Sonus Faber Cremonas paired with a Mark Levinson amp and cd. Clarity, depth, and warmth - magical

Toss up between Thiel CS6 and Vandersteen 5s. Gotta drive the Thiels with current however i.e. Krell

No single winner

Infinity IRS Beta driver by Carver Tube amps, I forget the name of the amp, with a turntable for the front end. I don't remember the entire setup, but I think the preamp was a Counterpoint & there was a solid state amp on the bass towers. I heard it in Lyric HiFi several years ago,

Also, Martin Logan CLS w. Eminent Technology Bass Towers. Great sound. I heard this several years ago. ARC tube amps on the Martin Logan

Cello speakers w. Cello amps - uncanny dynamics.

My Nautilus 801s playing loud with Rock.

Avalon Ascent or Eidolons playing at medium volumes.

I am still looking for a great speaker which can do it all. What I found is that intimacy & the ability to play loud are mostly mutually exclusive.

I have to join the Avantgarde Duos with SET (300B) monoblock amplification. I always think other systems are lacking by comparison after living with the Duos for a couple years.