Large speaker recommendation

I would recommend Either some of the higher end Dynaudios or Raidho’s.

Both of those are what you described. The Raidho is probably more to your liking as you listen to more classical but the high end Dyn’s are also amazing. And you already have the front end for both of those choices. 

Planers are another good option, albeit slightly different from what you were asking about (Dynamic).

My 2c - Good luck and remember to have fun with it.

Cheers!

Another thought….

With that budget, go find a Steinway-Lyngdorf dealer and take a listen - it is a vast departure from you asked for, but the end result is there. It is a system package, which is an adjustment, but let your ears do their thing. 

$30k used is a BIG budget.  It can take you above $50k retail.

You could afford big Wilsons, or indeed pretty much any top-range speaker.

Suggest you get out and do some listening

20'x15'x9' isn't really a big room, or is it? I'd say a set of KEF, Reference, 5 Meta or Dynaudio, Confidence 30. Have heard both in a similar (a bit bigger) sized rooms and both are truly wonderful. Played with Octave, Canor & Classe' Sigma electronics. If you can listen to either of these speakers I believe you'll be highly impressed. Just my opinion,...

Personally, I think once you get used to Sonus Faber, many other speakers may sound disturbingly forward to you. But, as long as people want to guess, how about the new PS Audio speakers? Maybe you should just add a couple of subs for when you want more impact.