Go to the U.S. not only is it more economical the general standard of training in the U.S. is much better than Aust and in particular the defensive flying training ( how not to kill yourself ) is much better, the U.S. actually teaches low speed handling to a much higher standard than the hit and miss approach here.
You will also be much more aware of proper Instrument Procedural Flying, the U.S. has proper aids and uses them well, also weather there can be more demanding on pilot training and skill, you will learn heaps about icing and shoot more Instrument approaches than you ever would or could here.
A U.S. ATP is recognised world wide, how long the Aust ATPL will be is open to conjecture but the way CASA is going my guess is not much longer !!!!!!