ok, seeing a lot of good comments on the Iwata, but which is the best model? I have been practicing with my Aztec doing the thin lines, but I am looking to do the reaallly thin lines- Aztec is nice for general work, but even with the "fine" tip, it does not get down very small. I really like the gravity feed cup built into the top, which double action is the best with this feature? Started out with the badger single action, and went to the double action later (emphasis on "Bad" in Badger). Aztec is a great starter airbrush, but ready to move up again. Thanks again