The best speaker you ever heard?

Though I haven't heard most of the above listed
speakers, based on what I have heard, my choice would
be Silverline Audio Sonata's.
I would dispute your thesis being that your speaker
selection is the most important component of your system.
I submit that a system with good speakers and a killer
source would sound better than a good source with killer speakers.

Quad 988 for $6K retail. Out of the 20 speakers Ive auditioned, utterly involving. Like live acoustic music. Need a sub woof. And romor had it not for punchy rock and roll.

QUAD 57 ESL met QUAD mkII krag-versterker.
Verseker die beste klank!

I own Quad 63 USA Monitors, and love them, but do have to say that a pair of Quad 57s properly refurbished by Wayne Piquet had the most midrange clarity of any speaker I have listened to. My friend's Innersound Eros MKIII also gets a big nod from me as one of the best speakers I have listened to. As far as dynamics go, I had Northcreek Rhythms, liked them very much. Though the Quads stole me away from them, I probably will build Northcreek's budget Borealis speaker (or the new monitor kit they have) just to have a dynamic speaker for some heavier rock stuff. No one speaker does it all for me, but if I were to stay with one, it would be my current Quads, or another electrostatic (like Innersound, etc)

The VMPS RM40 w/TRT caps and dual LARGER subs can meet or beat anything I have ever heard.