My next truck will be a GMC 2500/3500 or F-250/350. I've driven both in 2018 model years. I love the looks of the GMC and Ford. I also drove the 2018 Chevy which is very similar to the GMC of course, but the fit/finish on the GMC is more appealing to my eye (grille, cosmetics, etc). The GMC rides more smoothly/comfortably than the other two, almost as if you're in a car. The Chevy is also smoother riding than the Ford in my opinion. The Ford feels and rides like a heavy truck. The Ford has a nicer interior/layout, but I have a Ford currently so it may just be that it is more familiar to me than the Chevy or GMC. I like them all better than the Dodge, but that's just cosmetic really and personal opinion. Yes, I drove the Rams too. All 2018 diesels. If I had the cash today, I'd really stress over whether I want the GMC or the Ford.