If I were you, I'd look for Maggies providing you have the electronics to do them justice, or Vandersteens. I would not ever go to anything esoteric...
Plenty of good nominations, but if you want stellar soundstage and imaging, full-range performance, fast, smooth midrange and treble, bass into the 20s, excellent sensitivity and dynamic range, the GoldenEar Triton 2 rewrites price/performance at $3K/pair.
Demo Kingsound King listed here for $4,800 which includes shipping in continental U.S.
I reviewed the King for Dagogo.com, bought it and use it (see my system pics) as a reference speaker in reviewing. Relative to the performance level of the speaker that price is a gift.
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