I am looking for a REAL 4wd for doing some real 4wd work, it will be used in fire trails, and quite a lot of sand work, it won't see a lot of mud action.
What should I purchase?
I would like to use my F-350, but I don't want to lift 10" and put huge tyres on it because I tow 8000+ pounds often, and finding suitable off road parts for a Superduty is difficult here in Oz. Idealy I would like to buy another Superduty and lift it etc. but the budget doesn't allow that (My XL F-350 cost the equivelant of US$65000, after serious bargaining...) So far this is the list on order of preference. I would like to know what peoples opinions/experiences with the below models are (in order of my current preference): Is there anything obvious I am missing?

1. Mercedes Benz Unimog (1980's ish)
2. Land Rover 90
3. CJ40 Jeep
4. Ford Bronco (any version)
5. Original Range Rover
6. Toyota Landcruiser