Flagship sedans that cost six-figures tend to be a bastion of conservativeness. Just deviating from the segment-standard Mercedes-Benz S-Class to an Audi A8, BMW 7 Series, Jaguar XJ, or Lexus LS seems daring enough to most premium-car buyers. By comparison, going with a Maserati Quattroporte is like putting on a blaze orange Armani suit; it's clearly the choice for the non-conformist. Ironically though, the latest version of the Quattroporte (meaning "four-doors" in Italian) takes a big step toward normality.