Does the vehicle you bring back have to meet U.S. emissions and DOT requirements? I've heard of the idea that people from overseas can bring a vehicle back but getting it registered, regardless of how you got it in the country would be another thing. I'm just guessing, but I think what you're able to bypass is federal customs. The registration thing is a state by state deal and that might be tougher to get around.
Whatever you got, I'd make it a diesel. That would make it priceless if you ever decide to sell it here. I'd probably also go as new as you can to make it more likely to meet modern U.S. vehicle standards and less hassle getting it registered.
Something like a fairly new 100 series diesel sounds appealing. Land Cruisers are fairly limited in Europe. That was never a hot market for them. Maybe you could get a Middle Eastern version.
While I say diesel, A Middle Eastern 105 with solid axles and the upgraded version of the 1FZ sounds REALLY appealing to me. Maybe even one with a supercharger. Hmmmmmm.