Oratex will also stain, as some of us have found out. I think that a polyurethane paint is probably one of the few types that are very resistant to fuel and most other things. The PPG Durathane that I used on my first homebuilt was extremely "durable" and it really looked just as good after 28 years (and I expect it still does) as it did when I applied it. The latex intrigues me... I think I'd try it if I ever build again. Do you think that it is going to be heavier than the typical Poly-Tone job, for instance?