I am a outside account manager, so I drive alot for my work. I change my vehicles every 2 years. And being a person that likes to experience something so that I can make a comment on it, I have bought one of each. Each one has been good, I turned my dodge into a race truck, so I musta liked it (although I didnt miss the occasional death wobble) The Chevy (LBZ) wasnt a great truck stock, but worked quite well after I added a programmer, intake and exhaust (about 450 HP) Was a good tow rig ( I had a 37 foot 5er that was 15k dry) My biggest complaint with the chevy was the wheel alignment every 40 50 thousand kilometers (30k miles) I also went through 1 and was needing some work on the 2nd transmission. I now have a 2010 ford harley with the 6.4. Same as the chevy, stock it wasnt all that, about 2 mpg better than the chevy stock. But with just a tuner and a dpf delete, amazing. By far my most favorite truck I have ever owned. The ride quality is great, amazing in fact considering it is a straight axle front end. The interior (especially the seats) is of much better quality than the chevy. The leather isnt cracking, the seats are not bagging out. The ford does not need to have air bags like the chevy to pull the race truck. The back end does not sag when I hook the trailer up to the back. It is definately a heavier truck, but that works to its advantage also for towing, it isnt as succeptable to wind when towing, holds the road much better.
In conclusion, they are all good, all work fine, but the ford is definatly the best built truck out there right now. The duramax is a great towing engine, probably better than the powerstroke, but only marginally, both ride better than the dodge (which is a bucking wagon in comparison. I had forgotten how bad the dodges ride, till I got a new company truck with my new job and it is a dodge,,,, wow) The build quality is considerably superior on the ford, and joy of ownership is greater so far with the ford (which is something 2 or 3 years ago I never thought I would ever say