Have you proof of the reliability and longevity of the Korean 4WDs you now prefer over the Japanese models? The Korean vehicles are made from a lighter steel for the panels. I know of friends that have petrol 12-year-old Toyota Prados that have run 380,000km with no major problems but do you know of Korean units that have given that? If you do, I stand corrected.
The latest classy South Korean cars have been out only for a few years, so we have a while to go to match the Prados. But all the signs of good. As for lighter steel ... sounds like an urban myth.