I can't speak for the m60s as I've never owned a pair, but I can tell you the m5ow sound incredible. I have a huge room and they put out more than enough sound. I did have them hooked up to ada1500 and I know they can be a little power hungry but they still sounded good even when I had them hooked up to my AVR. Honestly you could probably do a m5ow as a center channel if you have room to accommodate the vertical layout. There are also several 160 mini and other ow center channels in refurb store as well.
