I wouldn't base your decision based on the engine only. Both are great engines. I work as a manager for a shop that runs 200 used cars a month so I have a bit of experience with lots of different vehicles.
Personally I think the larger duramax engine is better because it has a better powerband. The new bigger cummins engine feels a lot better though if you can spring for the extra $$$. I feel like the Chevy drives better without a load, and has the beefier running gear. With that said though the Dodge is usually less expensive, and being as they are both pretty close in my eyes I don't think you can lose either way.
I do work for a Ford dealer, and I despite my appreciation of Ford cars, I would never buy one of their trucks. The 6.0 diesel is the worst engine ever. The 6.4 is a much better engine but I don't think it's as bulletproof as the cummins and duramax. Maybe the 6.7 will be a tank, but only time will tell.
Personally I think the larger duramax engine is better because it has a better powerband. The new bigger cummins engine feels a lot better though if you can spring for the extra $$$. I feel like the Chevy drives better without a load, and has the beefier running gear. With that said though the Dodge is usually less expensive, and being as they are both pretty close in my eyes I don't think you can lose either way.
I do work for a Ford dealer, and I despite my appreciation of Ford cars, I would never buy one of their trucks. The 6.0 diesel is the worst engine ever. The 6.4 is a much better engine but I don't think it's as bulletproof as the cummins and duramax. Maybe the 6.7 will be a tank, but only time will tell.