>>The only noticeable placement issue I had was having to move them about 18” away from the wall. This definitely made a difference in SQ.
I think that IS the main issue with M80s. They're pretty deep, so if the back of the speaker is 18" away from the wall the fronts need to be 3 feet or more into the room.
M60s aren't *that* much different but they are a little less deep and they can go a little closer to the back wall... and they are a little smaller so they don't look quite as imposing sitting 4 feet into the room
