What reasons are there for NOT choosing Emotiva for an M80 setup?! Their site says they are coming out with a new multichannel amp within the year.
Call Lonnie @ EMO, he personally told me they are not a good match and refunded my money after 2 failed (blown channels) RPA-2's in a row. Customer service was excellent however. Remember, this is just "my own experience". Others have no issues whatsoever.
For what it's worth, you can read about my whole story here:
http://www.axiomaudio.com/boards/ubbthreads.php?ubb=showflat&Number=263595#Post263595