Suggestions to match a pair of speakers to Pass Labs XA25?


I upgraded recently from an integrated amp (Musical Fidelity M3i) to a XA25 power amp. I also chose the Pass Labs XP12 pre-amp for good measure - Wow, not the same world! I mostly play LPs (RP3), stream Tidal through Bluesound 2i hooked to a Brooklyn DAC+, and enjoy my old Marantz CD player.
When I bought the M3i 10 years ago or so, I picked a nice pair of PSB Image T6 - They sound great, though a bit bright with the M3I. Hooked to the new Pass Labs setup, they sound much much better... but I feel I'm missing satisfying "sound", stage/image, better definition, that plus that would make me smile broadly.
I've read many reviews, went to the CAF 2019 in the DC area... But I'm stuck about high efficiency speakers: Horn or not? I used to be a DJ with horn speakers to get the crowds go wild, so perhaps Klipsch would do great, but then I read about Zu (Soul Supreme) and I don't know anymore. I'm a firm believer that size matters, so bookshelf speakers are not for me. My budget is 4K-6K, and I believe that should be plenty to upgrade from the PSBs. Getting 3 or 4 pairs home to try out and return them will end up costing me some dollars, so narrowing it down to a couple would be nice. Any suggestions?
trackmoe
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As almarg uses Daedalus with his Pass, that would be the place I'd look first.
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The NOLA are huge 
The KOs are only 4’ tall.  They’re 8” taller, 1” wider, and about the same depth as your current speakers.  Hardly huge in my book, but it’s all relative I guess.