Premium Plus is better than the Prestige trim. This is because there are far wider options that you can choose with the Premium Plus than with the already loaded Prestige trim. Adding S Sport and Navigation packages are recommended. While the former adds adaptive suspension to the ride, the latter adds a larger multimedia screen and a virtual instrument panel.
2018 Audi S5 Convertible Prices
Premium Plus quattro 2dr Convertible AWD (3.0L 6cyl Turbo 8A)