The option to have 481bhp isn't restricted to the Black Series. It's an option you can spec on the normal C63. MB says they've been testing the new C63 coupe so that it will beat an M3 around most tracks now. I'll be honest, I'm absolutely obsessed with this thing now. We have a 2009 C63 in silver/black, and that thing's beastly, but I'd prefer an E90 M3. With pics and vids popping up of the new coupe, I'm drooling over the thought of a white on red coupe with some HRE P40s and an exhaust kit.
Listen to the exhaust when it's barely tooling around! This will be my goal car to buy used when I turn 25.