I trained on 3/4, 1 ton, 5/4, '67 and '74 Jeeps before getting into an Iltis. I keep in touch with many other military surplus vehicle owners.
Pluses (when in service) softer seats, faster, better heater and better tarp than any of the others. Negatives (now) zero parts supply, especially on the critical components like transfer cases, rust-out, Bubba-equivalent indifference to maintenance, no original tires left. Neutrals (now) many smart owner/builders have bonded to find work-arounds with things like the right c.1978 Austrian-division Audi Quattro parts manuals, tech weekends and parts look out services, ID'ing Goodyear Wrangler tires as work arounds.
Would I own one? Never! My '74 Pattern is a runner, is much more rare, and has a huge worldwide parts supply chain with NATO stock numbers and eBay for supplies. Mine needs bodywork, but it is all single skin sheet metal.