The new Benz's are amazing but, the S63 wont embarrass your M6.
But they both are amazing vehicles in their own rights.
I've had the privilege to work on and drive both extensively.
More so with the CLS 6.3S AMG
A tuned (157.985) has more torque then a (S63T) but the M6 still pulls at the high end, in regards to just software added.
There are more performance options available for the AMG line which will make it a killer for anyone with the right amount of $$$ to dump into it.
The 6.3's are beasts !!!!
Currently I have a friends CLS 6.3 that slowly is getting modded using Weistec's performance line. Amazing car to drive.
