What is the best brand luggage in Australia?

I am from New Zealand and I am planning to travel in Australia for a week this April 2011 and I will just bring a small luggage. I want to someone who can tell me the best brand luggage so I can all my thing pack up when I will be going back to my country. I am a person who loves to bring things and I want a big luggage for my comfort and of course the best value! I would appreciate for all your answers. I will be waiting for it before I go there.