Rick,

I know I've posted in the past about M80s v/s M60s,and made exaggerated boasts about M60s......but, this time I am serious..........the M80s are not best for everyone's HT/audio needs. To be fair, they do have amplification complications, IMO.
BUT, if one spends the proper time researching the 4 ohm characteristics of speakers, and amps, spend enough money on the one of the amps/receivers that WILL properly drive the M80s....they will be fine.

Larry

LIFE: "Choices, balance, and timing"

(Larryism)