Parma Faskolor is a water based paint designed for lexan. I seal my Createx paints with Parma Faskolor white, since Createx is a general use paint. But even so, I have never had a problem with Createx adhering to the bodies.
Yeah, but you can get laquer based airbrush paints as well. Check out Spaz Stix. They make some awesome colors. I use Createx as well which is water based.
I use Master brand airbrushes from Amazon/ebay. Not the greatest by far, but for what I do they work fine. If I were to buy a nice one, I would definitely get an Iwata. But I agree with those above. Paasche, Iwata, and Badger all have quality airbrushed. Or if you want to get nuts, check out...