For my nomination, I'd pick the C32. 350 horsepower out of a supercharged V-6 (and who exactly are the morons who whine that it isn't a "pure" tuner Mercedes because of the supercharger? I guess they, umm, never heard of this old Mercedes called the 540K that shows up at events such as the Pebble Beach Concurs that has a supercharger...

) And, it sells for $55,000 dollars and it is slightly faster than both the E55 and the highly touted 500E, true? Definately my top pick.
-Sam