Bragging rights, thy name is the 2013 Ram. In the constant battle for power and hauling capability among heavy-duty trucks, the latest Ram is the new king of the hill with its class-leading 30,000-pound trailer capacity and monstrous 850 lb-ft of torque from its 6.7-liter Cummins diesel engine. This newfound strength enables the Ram 3500 to easily surpass its heavy-duty rivals from Ford and General Motors, which aren't exactly lightweights. Even in entry form as the Ram 2500 fitted with a 5.7-liter gasoline engine, these heavy-duty trucks offer impressive hauling capability. A version that can run on gasoline or natural gas is also available. Like its competition, Ram HD trucks begin around $30,000 and are offered in a wide variety of trims and cab configurations.