my living room is about 13.5 x 20 x 8 and I sit about 11.5 feet from the m80s. My living room opens up to my kitchen and my hallway so the room is not sealed off.

In my case the m80s sound fantastic with my denon 3808. They sound great both at low and high volumes.

I can not comment on the m60's as I have never heard them.


-David