Yea, considering everything (Brent @ Axiom sent me a M50 freq response curve.) and the $200 jump to the M60ti, I think I'll still go with the 50s. I have a NAD 370 with Athena AS-F2s in the living room. They have a one inch dome and two eight inch poly woofers. There is great punch and surprising detail with the two eights delivering all that is south of 2kHz. So, I'm hoping that the M50s will be in the same genre. I'll team them up with a Rotel RX-1052.

Thank you for your very informative responses!