The best speaker you ever heard?

AG Unos beat Duos; Trios?
The best sounding speakers I have ever heard were a pair of Avantgarde Unos at the opening of Rhapsody Music & Cinema in Midtown Manhattan, known at the time as Avantgarde Music and Cinema. Their Trio setup was not even close to this, and I have heard that placement is critical for Trios. Has anyone heard both Unos and Trios in properly set up systems? I am interested to learn how they compare.

Magnepan 20.1 powered by Musical Fidelity KW Monoblocks and Conrad Johnson ACT2 Preamplifier. Oh My God.

ATC SCM 150ASL, I received mine about three months ago and wow they are better than the Salon, Dunlavy SC-V and SC-IV's B&W 801 and any other lesser speaeker I had before. An amazing sense of being there with no compression at volume. Awesome.

Focal JMlab Grande Utopia Be, nothing comes close, period.

sonus faber strads. unbelievable instrument reproduction, at moderate listening levels i heard a 75 foot organ sound as though a 747 flew overhead, and a violin concerto that felt as though it was going to shatter the windows. i felt as if i heard no coloration, just music reproduced as recorded.