Have you ever considered getting an airbrush to use on your models? I think you'd be really impressed with the difference one makes when painting. You'd then have access to a much wider range of colors and you'd be able to control how much solvent is in the paint you're applying, which has a dramatic effect on the way the paint flows out on the models surface. They also lay down a thinner layer of paint that leaves finer details visible. As much building as you've been doing I think it's well worth some serious thought.
