Hi Karlman,
Because I do blind listening tests for Axiom, I want to emphasize that the differences between the M3 and the M22 are really nuances. By the way, you're right to get the EP350 v3, which is a terrific subwoofer. I just completed another round of listening tests at Axiom, and the M3s are very close to the M22s. On immediate comparisons, you'll hear a slight difference in the apparent distance and "depth" of, for example, a drum kit and cymbals. With the M22s, there is a little more sense of 3-dimensional space and the cymbals seem a little clearer, but it's not easily heard. I had to switch back and forth repeatedly to isolate these nuances. Both the M22s and M3s are very uncolored (neutral) and pleasing on vocals, almost the equal of the M80 v2 towers (on male and female vocals).
The M22s, because they use three drivers, are able to play slightly louder and handle greater power input. That said, both speakers play cleanly at quite loud to loud levels with a sub.
Regards,
Alan
