The Dr Air is the same as the Aldi xsauto 150L, just rebadged. I paid $95 for mine and it works like a bought one. Half price! more beer money. Win Win
Im pretty certain that The Dr air is the "original" one that everyone else copied. However with a RRP of $299 they aren't cheap.
They do have a 5 year warranty, but unless you can find one for under $200 it can be hard to justify.
I have heard good things about the Aldi compressor, But yet to use one.
I had the pro flow mounted in the back of the patrol and it never let me down.
By crikey it was fast on the 33"s. However, Jk's set up is pretty much the bomb!!

Cheers
Evo