I checked M-S 502 online and they look very good indeed. Also considering that they are some British speakers. The price was 999 British Pounds (more than USD 1700) but not sure if that price was for the pair or for a single speaker. Rick, did you get them free shipping?
One thing I noticed, they have an integrated sub (in the speaker) similar to Aperion Powered Towers. I am not sure that this would be a perfect choice vs. two normal fronts with a sub combo. Also positioning in the room would be more difficult. Rick, please let us know your findings from the audition.
Axiom M60s, QS4s, VP100 Onkyo TX-SR804 Oppo 970HD
Rotel RB-1080/RCD-1072 REL Q150E sub, PS 3