I would greatly apprecieate any guidence ( links or responses) to the following questions:
1. Who is making quality oil and water-based paints these days?
Everybody. You'll find that, at least in the painting trade, the axiom "You get what you pay for" is a truism. All paint companies manufacture top of the line coatings
and your bargain basement blow-and-go product...
2. I have Zinsser's BIN shellac-based primer. Is that appropriate for the doors and trim.
Yeah, but you might wanna rethink that BIN unless you plan to spray; BIN is a good sealer and stain blocker, but it is NOT brush or roller friendly...If you're going solvent-based, I'd loudly suggest Coverstain, by the same manufacturer
3. I happen to own a Graco 900 HVLP tourbine with a Graco 960 spray gun. Will this help with the primer and/or paint application and results?
Definitely. You'll
have to thin your material to get good flow and coverage, and I wouldn't suggest running latex through it...If you're painting more than just a bathroom it WILL be time consumming!!
4. What primer and paint is best for the shower ceiling?
You really can't go wrong with oil, and though some here have more faith in latex enamels than I do, in a moisture-intensive situation oil is the BEST barrier coating (IMO)...
Good luck