I completely agree with your assessment that the B7 is the more attractive of the 2 cars (and would be my choice), but I can't get over by how much the S8 appears to devour the B7. Yikes!!!!
Currently: 2015 Porsche 911 GTS and 2016 Cayenne S eHybrid
Past BMWs: `05 645CiC; `07 650i; `08 M6 convertible; '08 135i; `11 750ix MSport; `15 M235i convertible
Others: '11 Panamera 4S; '13 Boxster S; '13 911 C4
"You think that's air you're breathing now?"