Welcome!
I own M60's and like them very much. I do not consider them "bright". They are detailed and revealing.
I have heard the Aperion Intimus 6T (but not in my home). I thought they sounded really good. I think the midrange clarity on the Axioms is a little better.
The Axiom vinyl is VERY good, but the real wood veneer finish on the stock Aperion's is somewhat nicer, to me. However, I do really like the Axiom cabinet shape rather than the big rectangle.
I think you would probably be very happy with either. One factor that was meaningful to me is that Axiom's final assembly point is in North America rather than overseas. I like to support American/Canadian jobs with my purchases wherever I can.
