Hi Salmonsc:
Currently, I am using the ARC VT100 MKII on the midrange/treble and the Kenwood L07M monos on the bass panels.
I am getting tons of bass, dynamics with >100dB SPL at my listening position. The combo is an excellent match: the Kenwood are very smooth which helps in blending with the ARC. Of course, many audiophiles will say that the ARC VT 100 is not powerful enough to extract the best performance form the 20.1s. But I am very happy with the results. The sound so far is incredibly musical, robust, pristine, panoramic, dynamic with tremendous bass impact and definition.