Best speaker between 15K-35K

Nice post, Holz. I too was overwhelmed by too-big and sometimes incoherent in the nearfield portrayals of larger great systems, and am happy with the room-friendly compactness and phenomenal performance of my Parsifal Encores (as I relate perhaps way too often!). Matching transducers TO YOUR ROOM is clearly the most critical element in selecting among the behemoths in the top end.

Adding a sub to ANY great speaker is more about ironing out room-rez bumps, right? I remember hearing the W/P 6 just before getting my Parsifal Encores. The dealer (who sold both) was puzzled that the W/Ps were coming back from a customer who preferred the Encores. But we also noticed that the Wilsons prodigious bass was overpowering the room, requiring more careful placement than the friendlier Encores.
Certainly a fine sub, well-positioned, can allow for speaker-positioning with staging in mind rather than best bass smoothness. The W/Ps clearly need a bigger room than the Encores....
Smoothjazz, your near-cubical room is REALLY challenging!
You may have to set up a non-symmetrical placement, probably a nearfield triangle, to eliminate those huge primary bumps. Good luck.