I love my Bose.
All summing does not induce cancellation.
Louder EVs do not cover more than efficient Bose PAS. They just make more sound up close.
I don't love the Yamaha grand piano sound ..... even in stereo, so I use edited versions or EPs.
I sold my second tower and use only ONE exclusively now. That's all that's really needed to cover any room size I encounter.

Mileage may vary. Boyd where prohibited.