If you leave Aussie it stays here. If you're from another country you can claim it when you leave Aussie, but NZ'ers have the right to retire in Aus, so you can't claim it when you leave.
But as I said, you can choose your own fund/terms that suit you.
Did I mention first home buyers grant? $7000 given to you when you buy your first home. They're considering doubling it too, by I'm pretty sure its going to be means-based. Meaning that unless you're on ther bones of your ass, you won't get it. At the moment, its not means-based, we're looking at buying a place right now, so we can claim it while we can.
And the weather, its a cool 21 degrees today. Middle of winter.
Some many positives.