2014 F150 SVT Raptor or 2015 Sprinter 3500 4x4 as tow Vhcle

For $55k you can pretty much get whatever you want - and of the big three in 1/2 ton, or 3/4 ton configurations, gas or diesel. My point is that for that kind of money, your options are pretty much unlimited. Don't limit yourself to just those two choices, as they are apples and oranges.