Buying used versus new is different for each type of purchase. For a run of the mill mass produced depreciating asset like most daily drivers, finding a used vehicle with all or most of what you like makes sense. When purchasing a higher dollar item, it becomes more blurred as it's much more about how you plan to use it and what it will allow you to do that you may not otherwise be able to do so there is an intangible component to the decision. If international travel is in the picture, then either older diesels or newer gas engines offer lots of flexibility. DEF diesels are fine for North American travel but much trickier the further away you go. And as mentioned some of the older diesels may be in jeopardy for emissions reasons in some locations. Also, new innovations with newer EVs can make a lot sense. Lithium and Solar have advanced allowing you to stay out there for longer. If you're going to spend a lot of money, it makes sense to get what you really want so you'll use it plenty. I currently have Hallmark truck camper that gets us most places but we're upgrading to an EarthCruiser for a little more capability and a lot more comfort for extended travel. My popup TC is fine for short trips and does great year around. I love popups for lots of reasons! However, the EC will actually have a tighter turning radius and is shorter than our current setup so it will fit in our postage stamp of a driveway, and of course tight camping spots. If the length and turning radius aren't a big consideration, the Nimbl Evolution on a new Ford 350 gasser is very promising. Both the EC and Nimbl will get you on your way capably, comfortably and internationally via container if that's an option important to you. There is not one perfect vehicle but there is one that's best for you. Good luck!