Extremely enjoyable to drive, the Mercedes-Benz S550 is a cruiser, not a carver. It doesn’t like to be treated as a sports sedan, so if slamming down a favorite country road is high on the list of priorities, choose a different car or spend extra for the upcoming S65 AMG. The standard S550 is an excellent cruiser, a terrific car for the day-to-day grind, a luxury suite on wheels, a little soft around the edges but our pick for almost any road trip anywhere.