The whole refined/unrefined debate can never end as it's an opinion at the end of the day. Iit all depends what you're comparing that engine to.
Now you all know US spec 200s are fully loaded, other parts of the world get the exact same cruiser but have an option on to choose "luxury specs". Reliability, toughness and all that is the same. The Australian mines beat on these on a daily basis they might have a different engine but the rest of the cruiser should be identical. Engine longevity? You should have some high milage 5.7s that aren't in a 200.
Toyota builds everything with a Land Cruiser badge to withstand more than what the previous gens could, also a lot of people complain the newer models don't wheel as well as the previous. They do, they just cost you a lot of money that's why you're taking too easy, its human nature, it looks bigger and is newer and more expensive, alarm bells will go off in your head in any offroad situation. My first desert trip consisted of stopping and getting stuck every half hour thinking i was going to rip the bumpers off. These things are built tough and will go on and on. Even the Prados wich are the baby land cruisers have to be able to perform offroad.
If you're thinking of 200, 100 whatever it is, rent one, borrow one, steal one, go for a joy ride. These aren't new age spaceships. They're dinosaurs with lightbars on their heads.
Here's something from one of the developers:
I first got involved in the Land Cruiser development back in the days of the BJ40 and FJ55V. I think back with nostalgia remembering driving a BJ40 down the Meishin Highway, with all of the road noise in the background and sweaty hands gripping the wheel.
Later the Land Cruiser went through a series of evolutionary developments from the L/C 60, 70, 80, 90 (Prado), and the 100. Thinking back to the early days, it's almost as if the Land Cruiser has been on a constant path of improvement in drivability.
In fact, with every model change the Land Cruiser always had the same basic aim in development. That was first to build on the Land Cruiser tradition of reliability, durability, and offroad performance, and second to improve it handling stability, riding comfort, quietude, and driving performance.
-Takeo Kondo