Horns are for PA systems.

Ok folks, you heard this genius. Sell your horns.

Have you looked at GR-Research? You could get their NX-Otica, or even the NX-Tremes if you have a high ceiling, and a pair of triple-threat open baffle subs. All that for under $10k. They are kits, so you would have to build them or find someone to put them together for you. They may not look as sexy as some of these high dollar speakers, but properly set up my guess is they would sound phenomenal.

Another voice in cyberspace for Klipsch horns latest model.  Plenty of them to score next to as new.  You can add upgraded drivers and a pair of subs ( a must ) and get ready for takeoff. Well under 20K.

Sonus Faber II Cremonese while not horns are great too. Would never have any remorse if these were in house.

Room treated?

I have heard the Meyer bluehorn. It's a bit of a shame that most audiophiles will never hear some of these pro audio gems...because, I suppose, it didn’t have the gloss finish for the cabinets, in spite of all the engineering that goes into it.

I currently have some tad 'influenced' horns.. Pioneer'sXY series (not that cheap) in my lake cabin...with modest electronics tied to it most times. It easily puts most things I heard at axpona this year to shame...if one doesn’t mind the lack of that glossy cabinet finish, that is..

When Levinson takes a pa speaker, i.e., from that ethos, puts a nice finish on it and sets the price at 200k, it stays backordered with audiophiles running after it.

Look for a pair of used Meyer Sound X-10’s. They’re active speakers and are about the best that can be had in the 15" woofer/midrange + horn/waveguide class of speakers out there. That’s including the JBL M2, K2 S9900, Everest’s etc., and yes, you’ll have to take my word for it. They don’t sound like horns but deliver a big, effortless, delicate and coherent presentation. Great tonality as well. There’s a "domesticized" tower version in veneer, but I’d seek out the regular

Wow! Wish I had that budget! +1 Klipsch Jubilee, Volti Audio, Altec VoT, JBL Everest. Synergy important, especially at that level. Amp, tube, SS, Hybrid? Source, TT, CD, R2R, digital stream? A lot to consider.  Make sure room evaluated by acoustic engineer and set up properly. Then, enjoy the music!