I'd look at the recall history and do a lot of research on quality. I really like the style of the dodges and the specs are fantastic, but their recalls are scary, they were buying whole trucks back. I have a 2012 Chevy and have had zero problems with it. There's probably a reason why Ford sales are #1, they've done a lot of work on their diesel engines too.
Whichever brand, I love having a diesel. The exhaust brake is fantastic for going down grade, it's a huge difference from a gasser. Going up grade is great too, but I feel very in control going down grade and much more confident.
My 3500 SRW short box is still tough for parking in even suburban areas, so be really certain if you need a long bed or a dually.