Just thought i'd add this here:
Speaking of brakes, the C63 stops from 70 mph in 161 feet. On the track, the brakes resist fading and feel strong, but again, the M3’s brake pedal is more responsive, and its 70-to-0-mph stopping distance is shorter: 153 feet.
I don't care if it's fixed or floating, as long as it brakes like an M3 does I'm good.
Source: Car and Drive E92 M3 vs the new C63 Benz
5 years old design and floating single piston calipers and the M3 still wins.