First, ignore brand. All of them are pretty good, though particular components on particular brands/models can be bad in certain years, pretty much as expected. Look at Consumer Reports for the most recent years (or for that year, if you're buying pre-owned) and examine particular areas of problems.
And go to dealers to haggle on price for a model that will handle your load. Of course, look at mileage for the vehicle that will deal with your load.
In the end, it's all about purchasing a truck that will handle your load, not break down for a long time on all critical components, give reasonable mileage, and be at the right price for you.
:)
Lynn