We have a Quantum, #39, and were instrumental in singing its praises to Captain.
We're very happy with ours. Is been very reliable and any minor issues we've had have been fixed promptly with minimal inconvenience. We're very happy with the after sales service from AOR.
Out original batteries died after about two years, and on replacing them , had a BM1 battery monitor fitted. Ours has travelled about 50,000 km, including the GRR, Mitchell Falls, and Bungles. It's handled the conditions well, has heaps of storage capacity, and having a dunny & hot shower is just the icing on the cake.
Almost all our camping living is outside, I basically consider the Quantie an ensuite bedroom on wheels.
If you're up FNQ way, drop me a line and come have a look.