It's a crap shoot. You may find you like the M3 sound or you might not. I have the Audiobytes paired with a cheap sub and I love them!

I personally would rather have more linear bass at the expense of reaching lower and going louder and improved midrange. If that sounds like you, ask Axiom if the M2 beats the M3 for linearity.

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