Hi Robert, welcome. There are several very helpful Axiom owners in Florida, so please do check again to see if any are near you and willing to host an audition.
I own M60's and have heard the Rocket 750 and 850 at board member lobm7's home (I believe he also frequents the AV123 boards). He was very gracious. I prefer the M60 to the 750 sonically; to my ear, it seems more transparent, open and detailed.
I would also encourage you to stay with one manufacturer for the whole setup, or at least the center and mains. Both companies provide excellent products and good value, but only Axiom supports North American manufacturing jobs.
