I went to Australia for 11 months and it was absolutely amazing, one of the best experiences of my life. Was working on a farm relatively small in size at 3500 acres, growing cotton, wheat, barley, oats and a few beef cattle too, next door was farming a whopping 60,000 acres(!) (30,00 of broadacre crops, 30,000 of cotton!). I would definately recommend going there, NO ONE I know who has been has a bad word to say about the place. As for NZ, I can't comment as I never made it over there, but a few of my friends have been and they seemed to enjoy it, but I wouldn't hesitate in advising someone to go to Aus.