This air compressor seems to have good reviews from what I can find and can't find a cheaper price anywhere else
Features:
A powerful Air Compressor with 600 watt motor
Twin Piston Drive Delivering 150 litres per minute of air
100A Insulated Battery clips with 1.8 metre lead for direct battery connection and On/Off switch
6 metre Coiled Hose allows you to reach all tyres without disconnecting compressor
Removable Easy clean Air Filter also helps to extend compressor life
Remote Pressure gauge with dual KPA and PSI readings
For only a little bit more, this is a better compressor
https://www.4wdsupacentre.com.au/products/air-compressors/th…
But this unit is cheaper and would be on par with the projecta
https://www.4wdsupacentre.com.au/products/air-compressors/th…
I had one similar (different brand, but twin piston) to the projecta, and upgraded to the thumper twin piston.
I would say the thumper single piston would be a better buy (cheaper with a better hose) than the projecta compressor.
I am not affiliated with the store, but have had both twin pistons (the one in the deal, and the one i posted)