The trucks are related like distant cousins are, they're both Fords. They're that different. The Raptor is sweet, super comfortable, easy to drive, even somewhat reasonable on gas. And servicing it isn't much different than a car. The Super Duty, it's a Truck. It's rough, It's suspension is designed for weight, the Tires are now F rated, that means a hard, stiff ride. Saying it has a smooth ride, doesn't means it floats down the road like the F150 does. So, smooth is subjective, parking and it's turning radius is ridicules. Period. If economical is on your list, it's not. The 7.3 is a Gas Hog, and the 6.7 is expensive to maintain. They're Trucks. But, if you want to Carry or Tow heavy, you'll not be able to wipe that smile off your face. I drive a Super Duty because since 78' 90% of my vehicles have been 250/350 Ford Trucks. I wouldn't know what to do if I ever got over 15 mpg.