Due to an aversion to diesel engines by 90% of the North American market , diesels in small trucks/SUV are rare. Unless you want to go big, ie F-250, you go import or old Toyota LandCruisers or Land Rovers. Chrysler did offer diesel Liberty's and Cherokees a few years back and MB does but you are almost dealing with opposite ends of the spectrum.
With all diesels, they don't break down a lot but when they do, the repairs aren't cheap.
What do you want it for work or pleasure?
I'm in the market also for a used one, but more for a work truck