Thanks for sharing, I'm looking into a c63, z06, or m3 as my next car... It's a tough choice for me since there aren't many good MB shops around here, but I have 2 amazing BMW shops... I've also had valvetrain issues with my M156 covered under warranty, but the C would not be under warranty since I plan on modifying it...
The AMG brakes are Brembos, so they should definitely be better than the Ms. I'm not sure if dad's c63 carbon fiber hood fits the coupe, but that may be an option. I bet the sound of the exhaust was intoxicating.