Tall, heavy, and riding on rather tall 265/60R18 Continental 4x4 Contact mud-and-snow tires, the Mercedes-Benz GL450 isn't the best handling SUV available, but we anticipate that M-B's in-house performance tuner, AMG, will rectify that situation shortly. In the real world where most people drive, the GL rocks. It beats every type of pavement anomaly into submission, features an electronically adjustable suspension that can ride stiffly or softly, and boasts an extremely tight turning circle. The steering is too heavy at low speeds and the brake pedal takes some getting used to, but overall this is a terrific machine for the daily grind.