2017 F350 dually with 6.7 opinions

I want to thank everyone for taking the time to respond and post links to information and data that I can read. I know it seems strange to throw mileage into the equation considering the price of diesel trucks these days. I like all the trucks, including Chevrolets. My current gas Chevrolet has some of the same problems that has always plagued GM. Crappy electrical components and body hardware. I know Rams have had their share of body problems in the past, but have not heard anything major from owners for the last couple of years. Have always like the integrity and design of the ford bodies but the engines reputation for problems are infamous.

After owning my current vehicle since 2001, I'm ready to try another manufacturer. That only leaves Ram and Ford. Any truck I choose will be mid to high optioned like a lariat or Laramie. I've driven both and each suits me so it comes down to reliability and fuel mileage.