2006 Ford F-350 Super Duty Lariat 4dr SuperCab 4WD LB (5.4L 8cyl 6M)
I replaced a 2003 F350 Crew Cab DRW LB 4x2 XLT Lariat with all the bells and whistles. Mileage is about the same as with the '03 7.3L diesel but the 6.0L has more torque and is noticeably quieter. Through 12,000 miles already and no problems to report. My spouse absolutely loves to drive my truck when I'm not using it, which is most of the time though. We are still using the '03 and it has 370,000 miles and still not using oil between changes and plenty of power! Just confirms my opinion that Ford really does build tough trucks.
The integrated trailer brake controller and the heated leather seats are my favorite features. 4WD shift on the fly is a nice convenience too, especially out on the farm or deer lease in lousy weather.
Still wish that they offered a GPS Navigation system at the Lariat trim level since I drive all over the US on business.