While both Porsche and Aston Martin have both recently added new 4-door grand touring models to their lineups, Maserati has had its Quattroporte since 2004, making them something of an expert. Legendary Italian design house Pininfarina contributed to the car's distinctive design, and Ferrari provided technical assistance as well as a pair of stellar V8 engines. Maserati's long history proves they know how to combine strong performance and the highest levels of luxury as well design that is intensely Italian. The Quattroporte's base prices start at $121,250-- about $86,000 cheaper than the Aston Martin.