I have heard the M3Ti but not the Aperion. Judging from specs the Axiom's seem to go a bit deeper in the bass. The Axiom is a nice speaker. Seems like a Paradigm Mini Monitor with a slightly smoother tweeter. Are you using a sub with these ? If not they might be a bit small in that room. Possibly the M60Ti or adding a sub if you dony have one. Otherwise things might sound a bit anemic.
Cheers