Thank you for the replies.
Well, I do have a buffer. And I used the Meguires wax. Still, I want a more permanent fix. Compount/buffing takes the paint off, and I'm trying to preserve it instead. Brushing-on paint is not very bad, actually I think you can get better finish than some OEM 2 stage coats, if you sand it right. I've painted my motorcycle tank with Rustoleum marine enamel, I did not sand/polished it, but the finish itself is pretty durable and looks good for 2 years already.
So far I'm thinking about getting some polyurethane marine clear coat, and trying it in a little spot underneath the bumper or in the trunk somewhere.
I bought the whole car for under $700, there is no way I'm paying the body shop