Footie, a C63 is an excellent car, but I don't want an automatic transmission.
Otherwise I 'd have bought a C63.
The RS4 is not a better DD than a M3, because it's heavier, slower, less agile, and has a less responsive chassis. My 335i stock was almost as fast, only beyond 240kmh the RS4 was faster. The roadholding is ok, but a bit boring for such a car. Any more questions?