I have M60's, a VP160 and two EP500's in my HT. I have no complaints and find the combination very adequate. I am limited in area, so these speakers were the most obvious choice to me. I was using M80's for the R/L. The M60's have a slightly warmer high end than the M80's. I didn't notice a loss in the lower frequency response area. I suspect the differences I am hearing is due to the M80's being a Ti version and the M60's being V3's.