Have the HO 5.9 diesel, SLT, quad-cab, 4X4 and am going on 263,000 miles. I commute 150 miles round trip 5-6 times a week and change the oil every 6-7,000 miles w/preventative maintenance every year. Excellent handlings on the road and in town as long as you¿re aware that you can not stop on a dime. Since July 2003 I have had to change the water pump, fuel pump, belt, rear bearing seals (twice), the brakes 3-4 times and other than tires 3 times..that's it regarding big cost items. I truly believe in the preventative maintenance helps the longevity of the engine which includes valve adjustment every year. My seats and interior are in great condition and I have had no complaints so far. Mileage over a mountain pass daily is on average 19-21 mpg w/ 24-34 mpg on flat roads depending on my foot. Either way I will run it to the ground and just drop in a new engine when the time comes. Concerns: play in the steering at times may get squirrelly on rough roads but Dodge says that¿s the way it is.