Thanks for all the good information. I drove both the C36 and C43 and the C36 seems a bit more spirited. The C43 had more low end grunt which seem to fade in comparision to the C36. I also like the idea that the C36 is more AMG to the core due to the special motorwork to enlarge displacement. Now the fun begins....where to find a decent example. C36 and C43's seem to be selling at rock bottom prices on eBay...are these prices a true representation of what they are worth? Or are these like most cars on eBay....tired, beat, multiple owner cars?