i have yet to see the SLR, lookin forward to seeing it

 

Being a militant Audi fan I would go with the A8 W12 because of the interioir I feel is more simple and elegant then the jam packed 600. But the Sclass especially the S600 is considered to be the "best" car in the world. Most presidents drive in them its just an incredible car the sheer size and precense it creates and not to mention the name.