The Nissan Titan XD is looking like a decent value proposition when buying used compared to other diesels, especially if you’re looking for something that can handle a load a bit better than the half tons but maybe don’t need the ridiculousness of the newer 3/4-1 ton diesels.
Here’s a ~2 year old vehicle that had an MSRP north of $55k selling for $37k (and you can actually find some in the lower trim levels for around and even under $30k)...for comparison similar 2017 2500s are selling for $45-55k
The XD seems to be holding prices similar to the half ton diesels available but gives you a more capable and stable tow vehicle than the other half tons. I’m guessing in a few years these will be under $20k.