TD4 is the only reliable one. The others suffer from the usual Rover K series low coolant capacity problems leading to many head gasket failures.
Read what Honest John has to say about the Freelander:
http://www.honestjohn.co.uk/carbycar/index.htm
Shame you rule out jap crap as they make the best soft roaders. The Nissan X-Trail is very popular in the UK (made here too I think) and the diesel will still do 40mpg. Don't know if its available in SA though.