Hi Mark! and welcome!
Looking at your room size, it looks as though you can go either way with your purchase!
The only real concern that may exist is the "upgraditisbug".
When the usual "Axiom" fan shows up here, it's usually because he or she is attracted to a more accurate sound...by a margin of about ten to one!
When the words "cost" or "buget" or whatever similar comment is voiced, and when tied to M3s or M50s; it leads one to believe that perhaps said M3s or M50s are not the very first choice
!!
Just hate to see someone "settle" for something, when for a few weeks more time and wee a bit of creative bugeting, they can get something they really want in the first place! And will be satisfied with their purchase.
If you are familiar with the differences between the M3s and M22s, and the M50s and the M60s, and feel that the somewhat more restrained character of the M3/M50 is what you desire rather than the more accurate presentation of the M22/M60, then great!
But if you're more preoccupied with dollars rather than sound at the moment.....!
......by the way....I have both M3s and M50s in the same system, by choice, and couldn't be happier!!
Rich.
