Okies,
I have an EU version SW1600 for sale at about half that. I can wholeheartedly recommend the SW1600 compared to several highly regarded subs. If you forget about the subwoofer for a second, what happens if you run the DSP3100 as full range and compare with the F80/AD88. Midrange differences?

DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.