I am going to address the weight issue head on because I don't think people understand it.
The weight has increased, but the grip and lateral traction has been increased commensurately. The car can corner very well as an M Car should. It isn't a straight line car like the E63, CLS63 or S6. The M5 loves corners.
FOR SALE: 2013 ///M5 Individual Click for pics and info
Monte Carlo Blue, Platinum Full Individual Merino, Platinum Alcantara, Piano Black, Exec Pkg, Drivers assistance pkg, Bang and Olufsen, 20" wheels