If I were to buy a new truck, either in 3/4 or 1 ton, I'd probably go with a Cummins equipped Ram (Dodge) truck. The rest of the truck is so so but the drivetrain is pretty stout. Second, I'd go with a Chevy/GMC with the diesel engine. Last would be Ford. There is a heavy ratio of heavy truck ownership down at work and die hard Ford fans are often getting Rams. Ford has had a lot of issues with their oil burners.
Personally, I'm not a fan of the styling on any of the big three. Granted, for a heavy truck it has to be a good sized unit, but some just seem TOO big.
Now, if you're not going diesel, the Superduty Fords are pretty stout and I've rented some recently for towing. I wasn't towing huge loads though. If I hadn't seen it in the mirror, I'd think the trailer came off.