I bought WA and SA maps prior to a road trip through these states and find them suitably detailed. Some detail is quite small so a magnifying glass will be usefull even with reading glasses on.
We are planning a trip to SA in March next year & needed a physical map, as always Hema maps are great, lots detail. Hard to buy in the shops, ordered on line here very quickly. Ordered a NT & WA one as we plan on doing those states as well.