Joel, BEWARE the graduate loan.
I have one of these for the home my wife and I are constructing at present.
They are great loans, but make sure you read everything.
Due to the structure of their repayments being indexed at 3%pa, and your minimum repayment not varying with interest rate, if you pay the minimum with this loan you CAN (not will but it is possible) be in a situation where your minimum payment does not meet your interest accrued for the month - you actually owe more than you did at the beginning of the month.
This of course is not an issue if you are on top of these things, aware of the interest charges and are paying more than the minimum.
As always, Andrew's advice is based on sound analysis of fact.