2010 Ford F-250 Super Duty XL 4dr Crew Cab SB (5.4L 8cyl 6M)
We use the Ford Super Duties in our business. Bought 2 99's, 2 01's, 2 04's, 1 05 and 2 of the 10 models. Total mileage on all 9 is close to 900,000. I know exactly why the Super Duties outsell all others. The 6.4 diesel has disappointed me somewhat with the mileage, but it pulls like a dream. Drives, rides and handles great. Sync is the best thing to come along in years. One thing I have noticed about Fords over the years-- you just flat don't have any trouble with them.
Sync, 6 speed auto trans, more responsive diesel engine, plenty of payload, great seats, very comfortable
Mileage, but I understand that the 6.7 diesel has already addressed that problem.