They can't touch the M100s for dynamics and fidelity even when fed gobs of power. To my ears though, the M5s are more refined for soundstage and imaging. The actives are everything the M100 and M5 is scaled up by at least an order of magnitude.

I expect the active M5s to be better than the M100 because they will be just as sensitive, more accurate, with better imaging and soundstage and easier room integration.

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