Well! I don't agree with niravana75062. Big market doesn't always mean more opportunities. Even if its economy is smaller than India's, there are 21 million in Australia. Compare that with people in India. Therefore, at some fields Australia has more scope than US. However, the biggest challenge with Australian degree is that it somehow limits you to Australia. US companies don't give a flyin *#^% about degrees from outside US (MOSTLY!) so if you want to end up in Australia then it is a good idea otherwise it screws you over.