@lg1, my listening space sounds very similar to yours. (Square footage, long wall placement, open concept at one end).
I have space for large, wide, but not very deep speakers. Of those you list, the Cornwall IV would be my choice, but would urge you to also consider their British cousin, the Tannoy Legacy Arden. Same physical size as the Cornwall IV, with a different driver approach. They can found through some UK dealers at pricing similar to the Cornwall.
I have space for large, wide, but not very deep speakers. Of those you list, the Cornwall IV would be my choice, but would urge you to also consider their British cousin, the Tannoy Legacy Arden. Same physical size as the Cornwall IV, with a different driver approach. They can found through some UK dealers at pricing similar to the Cornwall.