Maps

Good morning all you happy travellers, I am two weeks out from heading of across the GCR, the plenty and Donahue to Brisbane, now I know some of you have already done this trip, and my research over the last 12 months has been extensive
what I would like to know is what paper maps do people fine useful for this trip, I have a good Garmin and also the one in the pathfinder is also very good now that it has been updated to take in country Australia, I also have maps for the lap top, but what I really need is some advice on the paper maps for the area that I shall be going through.
thank you