I've owned an '10 S5 last year...Man was the interior beautiful
I don't think I sound bias as i can see most of the early comments agree...$30K cheaper (comparison test) and the S7 is faster, more efficient, bigger trunk, great on corners (if needed). No brainier IMHO.
Look at this GORGEOUS diamond stitched interior complimented with Carbon Fiber trim all the way to the back seat.
1. S7
2. 6 Series Gran Coupe
3. CLS550 (My God the Interior and Rear Tail lights are so ugly)