Taking advice to stick with >90db at 8ohm and >93db at 4ohm, it does narrow it down.
I’m not just canvassing opinions for fun, I will actually listen to these suggestions.
Making the cut with high enough efficiency to be in the Goldilocks zone for the as2100, with a warmer signature and wide sweet spot to be used in a very large room (these were my requirements, so I am assuming recommendations above were aligned with that )... + ...I can tolerate looking at them:
"Vintage" designs with large drivers, used
-Tannoy Cheviot/Arden Legacy
-Klipsch Cornwall
-Spendor SP100
"Traditional" Designs, used
-Tekon Double Impact (eeerm, can Eric do a veneer??, could buy new also)
-Verity Audio Parsifal (8ohm, 89db...on the limit)
-Anything in my $ range by Daedelus
-Anything in my $ range by Coincident
Not listed here, new, but still interested
Focal Aria 948
Opera Quinta SE
Not listed here, used, unicorn
VR-4 Gen ii
Listed right now ’locally’
https://www.canuckaudiomart.com/details/649453778-alta-audio-lelantos-speakers-massive-bottom-end-fo...
http://alta-audio.com/collection/lelantos/
That should be enough for now. Little bit of focus helps ...