I've been using Ecoprime to date on everything and I'm happy with it, but I do note that it is not solvent resistant at all. I'm out of Ecoprime and opted to get one more quart to finish out the wing, but I'm going to switch to the Ecopoxy for the fuselage where exposure to fluids is much higher. Bought a quart of each and a new spray gun.
9/1: after two shipping errors from aircraft spruce I finally received my paint. I opened it and it had the consistency of drywall mud. That can't be right. Need to call Stewart. Frustrated. Update: so it is right and that's just how ekopoxy is. They suggested a drill driven paddle stirer to get it mixed up.
Purchases: ACS: Ecoprime, Ecopoxy, Proseal