I very much prefer laquer paint done with my airbrush to anything water based. What I have not had any luck with is any of the laquer sprays paints.

For airbrushing I used pre-thinned paint intended for model cars. The thinner ratio was pretty high so there was quite a bit of solvent, which should help bond the paint into the lexan. I also sprayed at 15-20 psi with multiple thin coats. Other than cleaning and scratching the lexan with a scotch pad that's all I did. The laquer held up better than anything else I have used.