Best Car to tow with - Under 7k?

[Cam]

Hi All,

As the title suggests..

I'm heading off in the coming months for a trip around oz with my little boy. I'll be towing a van between 1000-1800kg..

I've been looking at I6 AU II/III wagons but was wondering what else out there in my price range fits the bill? I need something with some storage space (hence the wagon). If I get an AU it'll obviously be fitted with electric brake controller, as well as a trans cooler, possibly shiftkit, upgraded rear shocks etc..

I would love an I6 (or even a 5L) on gas but I have read so many threads with people who have dramas on gas it's scared me away from it!

I have considered a BA wagon, but I am not sure that a BA will really be a better tow car?

What else is out there for my money?