Thanks JohnK and jakewash. After posting here I later sent the damping factor data from an audioholics review of the Marantz sr7002 to Brent http://www.audioholics.com/reviews/receivers/marantz-sr7002-hdmi/measurements-analysis-report and he feels the A/V shouldn't be a problem. The bind in my mind becomes the question of what the gear will sound like. In a 1600 cubic ft theatre with a vp150 and ep350, would the M80s translate into truly better sound vs the M60s, or would I hear my money. Since blind tests in my theatre with all the comparator gear is a fantasy only - any strong and reasoned opinions? Thanks Axiomites.