Let me just throw this out there. Have you ever heard a person with a diesel say its too much or they wish they'd have gotten a gasser. And every diesel owner will tell you they would not go back.
On the other hand, there are gasser owners who are happy with their truck, and gasser owners who wish they had gotten diesel.
If finances allow it, I'd recommend diesel. I've done tons of research on the two, and engines within the diesel category. The only drawback to diesel is higher maintenance costs. But in the end, much better mpg, towing capacity, life expectancy, etc.