Will be trading to a 5th Wheel. Which TV. (F350 or Ram 3500)

I bought a 2014 Ram 3500 Dually 4x4 diesel to pull my 2014 Montana 3900 FB. First time to own a Ram, got it in January and love it, pulls great, you can't even tell you are pulling fifth wheel thru the hills. MPG when pulling is between 10 and 13 in the depending on terrain. When not pulling between 16 and 22 mpg. I would recommend this truck, I've always driven Chevy trucks, but the load capacity is a lot higher with the Ram. Good Luck on your trade, there are some good deals out there