Herm, welcome. We're confident that you'd be delighted with the M80s. Your 372 should have more than enough maximum output capability, especially in your size room, since the M80s are slightly higher than average in sensitivity. The separation and listening distance numbers you give look good; less that about 8-9' of distance might not be good from the standpoint of giving the M80 drivers room to "blend".

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Enjoy the music, not the equipment.