Heya,
I don't know lender policy for the small banks not on my panel very well - but take a look at Newcastle lender too - they have some very good rates going on.
As emailed and explained by others here, there may be more to consider than just rate though. If your goal in property is this one and only transaction, loans.com.au (and the like) are a decent option.
Cheers,
Redom