900HP Brabus Rocket V12 & 850 Biturbo Start and Driving Sound!

Here are three Brabus cars, based on Mercedes S Class, 65 AMG and 63 AMG.
The Rocket 900 is the recent white one, based on the S65 AMG, making 900hp and capable of 350kph!
The black one is a 850 6.0 Biturbo and makes... 850hp, from the S63 AMG.
Finally, the cream old one is a Brabus T65S, based on the S600, so with a biturbo V12.
That was a LOT of HP, and I personnally think the black one is the most beasty looking/sounding. Though the 900hp of the Rocket would erase any supercar in the straig