Hey mate. I'm in Oz too. I've grown up with delicas. It kind of depends on how much storage you need, year models desired etc.
I've got an Australian release SWB 1989 Mitsubishi Starwagon. Its a petrol (and I don't think that they came in diesel). But it is great, goes everywhere I want (mainly on the beach is my preference) and plenty of space for me (I did one trip with 6 friends in my van, and about 7 medium sized suitcases in the boot). Not super cheap to run, but reasonable. My van corresponds with the L300 shape delicas. I believe this vintage came in diesel if you get a Japanese import. A lot of people uses these as campers.
My Dad used to have the newer L400 shape (a 1996 and a 2000) in a diesel model. They used to come in both a SWB and a LWB.
He says that this model had better 4WD capabilities. Not the cheapest to run though. But a lot of people use these as campers too.
And my Dad now has a 2008 Delica D:5, in Petrol (though you can get them in diesel).
Since he's had it, he has gone everywhere. We've been to several beaches with no issues and even the renound Perth Power-lines track. Space wise its ok, with the third row of seats out, the boot is massive. I don't know if they come in a LWB. But it is a very comfortable ride. And I haven't seen any as campers yet.