I've always had a Ram. First truck at 16 was a 1/2 ton, then went to diesel. '03 RCLB, '10 CCSB, '08 Mega. I was in the market for a new truck and decided I was going to be unbiased and price & drive all 3. Going into this, I will admit, I was still biased towards the Ram but I absolutely loved the look of the 17+ Fords.
Drove a Chevy High County first....very nice truck, has nice features. Drove it in the middle of winter with snow on the ground and could still tell how nice it drives. Quiet, good steering feel, smooth. Complaints, small back seat and I have 2 kids that ride back there, one of which in a booster. It would also be going on sled trips so at times, 2 adults back there for extended periods of time.
Ram next...drove in summer. Nice truck, had new tech than my '10 but other than that pretty much the same inside. Power, function, drive, handling were all what I remembered from my '10. It was also the cheapest of the 3. Complaints, back seat isn't as roomy if you get Crew Cab, but I was still considering the Mega since that is what I was driving at the time ('08).
Ford, drove a buddy's instead of going to a dealership during fall harvest. I was really impressed with how it handled, the feel, and the power. His was a 17 XLT so didn't have all of the tech features that I would get. Backseat is big! I'm only 5'10" so behind driver seat there is a lot of legroom. Complaints, no LED lights with the sport package. That's basically all I could come up with.
For comparison, I tried to spec them out as close as possible with options and trim. GMC SLT, Ram Laramie, Ford Lariat
All 1-Ton, CCSB, 4wd, Diesel (with an option for a Mega on the Ram)
After all my drives, research, pricing, etc. I ruled out the GMC (liked the GMC look better than the Chevy). Just didn't want the small backseat and the drop frame under the cab drove me nuts. Maybe a set of step bars would hide them??
Between the Ford and Ram, there was about $5k difference in price (Ram being cheaper), and even the Mega was still around $2k cheaper, but I couldn't get past how much I liked the look of the Ford. I was really starting to lean that way, and figured it wouldn't be bad to try something else for a change. When it came down to make my decision to order, my mind got made up for me because the '19 Rams weren't released yet. This was Nov. '18. So at this point Ford was my only choice to get something ordered before the end of the year (taxes). Received my Ford 9 weeks to the day (1/23/19 -- my birthday so that was nice!). As of now, I have 12k miles on it and couldn't be happier. No complaints and it has a nice mix of daily driving as well as pulling trailers with building materials, skid steers, etc and doing work on a farm. Drove to Massachusetts in October to pick up a boat and averaged 14.5 mpg for entire trip (1900 miles).
Moral of the story, definitely drive all 3. Find out what features you absolutely must have and try to drive one as close to what you would buy/order. Like most have said, I don't think you can go wrong with any of them, but don't be afraid to switch from the brand you are comfortable with. I'm glad I did, but I will do it all again when I am in the market for another one. Best of luck.