The eternal question: is it better to study in Australia or Canada? When the two options are excellent there is no single answer, there are types of people and preferences. There is the key! Therefore, depending on how you are and what you are looking for, one option or another will be better for you.
Are you coming to Australia with the Work and Holiday Visa? Ohhh Yeahhh, welcome and enjoy. Although, as someone a little repellent would say: "you have to enjoy carefully" or, worse still, "better safe than sorry". They sound bad, but they are true, and that is why there is a lot of sense in hiring health insurance when you come to Australia: high prices in health, risks of luggage losses, high costs of unforeseen transfers, expensive bills if you have to urgently return to your country, etc.