I have been using Glidden flat interior latex. It seems to be the easiest to spray and covers with just a couple of thin coats. I also just use distilled water to thin it and it works great. It also will work through my Paasche airbrush with the big tip. I use a variety of sealers from clear epoxy to buyterate dope depending on the final finish. Matt experiment with thinning the paint before shooting the model. Latex is kind of criticle on thinning so you have to experiment a bit. It does work great and is a really an inexspensive and safe way to paint. Don