Wilson Sophia 2 or WP 6 ?

I know this topic as been much discussed but I would like to ask this specific comparison. The Wilson Sophia 2 and the Watt Puppy 6 are both going for around the same price on the "pre-owned" market. Around $8K. This is the limit of my price range so I ask those who have heard and or lived with both to comment on the differences. I have hear the Sophia 2 and really liked it, but I do not have the ability to audition both side by side. I listen to mostly classic rock (Floyd, Wings , Stelly Dan, etc) So not really concerned with the bottom octave or an organ but more with the authority of a kick drum recorded on old analogue gear way back when I was young ! They will be used with Audio Research CD3, LS26, VT100MKII. Transparent Ultra Bal cables and Shunyata Hydra and PC. I imagine the mid-Hi section similar so what is gained or loss between the single 10" woofer vrs the 2x8" ? Thank you