Seeking, your concern about powering the M80s is not uncommon re the 4ohm load. I had this concern myself, a year ago, when I was looking for an AVR to power my M80 fronted HT and was assured by the members here as well as both Brent and Alan from Axiom that my choice of a Denon 2809 would be fine...and they were right. One year later, everything is fine, no issues at all. I'm sure someone has already mentioned it, but look for an AVR with pre-outs just in case you move to a much larger HT or if you really don't like your neighbours.

Half of communication is listening. You can't listen with your mouth.