Doug, apart from your earlier review, I have not been able to read anything else comparing M60s with M80s (only general statements on sound similarity). And, for as much as I can recall from yours, I only remember "louder" being mentioned. I would appreciate if you can shed some more light on the benefits you noticed from upgrading (or any links on previous comparisions in this forum).

Others, that have had the chance to try them both, plaese fill free to chime in.

Axiom M60s, QS4s, VP100 Onkyo TX-SR804 Oppo 970HD Rotel RB-1080/RCD-1072 REL Q150E sub, PS 3