As I am gonna be in the market for a pickup in the category within a couple of years I asked my high school friend pretty much the same question. Main background on him for this conversation, he is a service tech for a small ford dealer.
His response was if you want a rattler go with a inline 6. Ford is still having problems and Chevy has issues with the water separator. He qualified with Chevy if the water separator was serviced regularly you would be ok with a chevy but stay away from ford. This is from a Ford service tech.
He also said that all the gassers were good.