Looking at getting five WS 1665 in a surround sound set up (L, R, C, SL, SR) and a sub. I know 1665’s for surround is overkill but I have a very large room and will want to listen to music at times too. Will the performance of the 5 x 1665s be the same as 4 x UB5 Slims + UB5 Center + sub? What are the expected differences? I love the positioning capabilities of the on-walls (and so does the wife!), but don’t want to sacrifice sound quality. thx!