NoWayMan,

The SVS SB13 ultras work extremely well in my system, they compliment the DSP6000's wonderfully. They have huge power with music, I'm sure for movies they would rock (the foundations).

I use an external DSP unit to correct the bass, I don't have MRC.
I recon having MRC and having to buy an analog output to run the DD12+, it makes more practical sense to get the DSW. It's the easiest solution.

Roon/Tidal, SBT, Trinnov ST2 , Twin Devialet D premiers, Vivid Audio Giya G1 Spirits, dedicated and treated room.
Meridian gear: 568.2mm and DSP5000's acting as TV speakers.