With the various store fronts and loyalty program, sticking with Axiom is a very convincing value proposition. Of course there's also the sound quality. I just heard the 1100s so I have a good idea of what the M100s sound like. You're going to love the v4 tweeter. I'm looking forward to upgrading my v2 M80s.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated