I owned the M2 (not the M2 v3) for about 6 months. That was about 7 yrs ago, so things probably have
changed. The build quality of the speaker was nice (not real veneer, but certainly looked like veneer).
The thing I didn't like about them was that they had a bright sound. Not that "bright sound" is bad, some people
love that sound, and the detail. To me they were to fatiguing to listen to. I sold them to a guy in Michigan, and
he emailed me and said he loved the detailed sound.
The QS-8's from Axiom are about the best surround speaker I've owned, and about the only Axiom speaker I really like.
But everyone has different tastes.
vardo