Don’t see Devore O series on the list but hoping to hear some myself - rarely come up used. Just a comment on Audio Note - they want to be in the corner - not sure that would work in your current space but you mention you are moving to another room.
im on my first stop on the high efficiency journey - agree with the comment about music sounding effortless. I’m using Omega CAM in a smallish room with a single sub. Don’t miss the tweeter at all - both because I sit in a fixed sweet spot and also as I’m 68 and my hearing drops off after 12k… please report back on where you end up