The entry-level Canon Pixma MP160 is a decent all-in-one printer for the price, but don't be tempted by the entry-level machine: the Pixma MP180 costs a mere AU$20 more and provides the same print quality and a ton more features.
With its wealth of photo-manipulation features, the Canon Pixma MP800R is a great choice for an amateur photo hobbyist. It's also fast at all tasks, which makes it a better choice than the HP Photosmart 3310.
The Canon Pixma MP830 is a good option for a single home or office user who doesn't need high-quality graphics prints. If you need better graphics handling or networking, check out the HP OfficeJet 7410.