Automotive products, Dupont, Spies Hecker, and RM with a two stage clear coat, Dupont, is where most of my choices have been for paint. I've also used K&B Epoxy and Dope plus some of the aerosol can stuff sold in HS for models. That stuff can work great!

Picking the right colors and just "dusting" enough to cover, can save weight.

As I said, I couldn't care less about weight. I'll glass and paint or use silk and dope on most of my models.

However, I have a 27% Staudacher that I'm tempted to cover with iron on to save the weight. Only because of the way you would fly this particular model. Crazy, but guys are flying them, in a way real airplanes don't fly. Times change.

I've posted this photo many times of a model I scratched and finished many years ago. This model is glassed and finished with auto primer and paint. Dupont clear. Lettering and other detailing was done by brush and airbrush. All tight edges, no airbrush freehand.

Charles