Really depends on what it is you are after(with regard to GTP's) for people to give you recommendations, but there are plenty of GTP breeders in OZ.
A smaller private breeder on this forum who has great ethics, is a guy named SOLAR 17(Baden), contact him, i would have no hesitation in recommending him too anyone.
There are dozens more around, do some searching, contact them and see who you wish to deal with.
Hope this helps