I can't think of a good reason to use oil based paint for anything any more. Either use SW's best, or some even more expensive marine paint. Sherwin Williams Emerald Rain Refresh is amazing stuff and it's currently all I'm buying for exterior paint. I painted a fascia on a rental house with it when it first came out. That white fascia always had black streaks on it, but now, about a year later, it looks like I just painted it yesterday.

If you can't spray house paint with airless, I'd forget trying to spray it any other kind of way. I would brush an entry door. Sprayed finish might be too perfect for hands and to keep it that perfect you can only spray it again. With brushing you can repair damage in place. That paint brushes nicely. I'm brushing trim and windows with it.

SW often has their paint at 30 and sometimes even 40% off. Try to catch it on sale because even then the price is shocking if you haven't bought paint in a while.