I initally ordered the M2, but changed my mind the following day and paid the difference to upgrade them to the M3. I figured that I have a 27" iMac so the size difference in the speakers is minor compared to the size of the monitor, and sound is everything.

Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5