I forgot you can also get 5% with ING Direct for 2 years: Comparing the best rate for 2 years 24 months term deposit in Australia However you have to have over $10,000 to get that rate of interest.
I don't normally add the 4 year best interest rate accounts on Compare the best savings account rates, highest interest rate on instant access and term deposits however while updating the pages I did notice that the 4 year fixed term deposit from Rabo Direct was well above other banks and some people may find it of interest and of help to make the most of their savings:
Term Deposits with High Interest Rates | RaboDirect Australia
You can still get more with instant access, with Rams currently offering 5.01% instant: Best interest rate for instant access cash savings in Australia
Or a 5 year from Rabo Direct offers a fixed interest rate of 5%.
With not knowing where interest rates are going to go and the Australian inflation starting to slow a bit that generally means lowering of interest rates. I'd personally put 50% into instant and 50% into fixed. However I've been caught out in the past by believing what the media has to say!