Hi merritt,

I think you'll be fine with the M3s and VP100 plus your add-on sub. The M3s will play cleanly remarkably loud. If, however, you found you wanted greater dynamics in peak volume levels with movie soundtracks or music, you could always upgrade to the M22s. Because of the M22's three drivers, they have greater dynamic capability. There is no charge for return shipping within the 30-day trial period if you upgrade to a more expensive speaker (the M22s vis-a-vis the M3s).

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)