"initial impression is that the M3 is MUCH more satisfying as a standalone speaker, again more than I expected "

Hey Man,
Can you give me an idea as to how much difference there is at very low listening levels?
I am considering either another set of M2s or a set of M3s for the bedroom, but they would just about always be used at very low levels to go to sleep to. Is there as much of a difference when they are both played quietly?
Thanks,

Axioms; For when you've just Gotta have More Cowbell! 60s 150 350 8s 2is RX-V2500 DVD-C750 2900