Would you get an A7 or S5, and why?
I would have to get the S5.
For me the availability of a manual transmission ends the decision making process. Other reasons - both cars are too large, but the S5 is less so. The A7 is really fun (and better looking, I think), and an athletic car, but you can’t help but be aware of the mass and size of the car.
I’d get the A7 to take three other adults and large triangular-shaped packages on highway trips. Otherwise, the S5 wins.