I myself had a PB1000 paired with my M80s for the last 6 months, was O.K. though not a big difference to the M80s alone.
Over the last few weeks I have added a EP500, mega difference. From more Bass to more detail in the Bass especially if you run the M80s as large.

The Anthem A.R.C. that comes with the addition of the Paradigm mike, looks pretty convenient for the setup.

Though beware a small sub may not hit frequencies the M80s already handle with ease, as they are rated to 30Hz already.