I have always used ppg stuff, they have an economy brand called Omni that I have sprayed for years that is very good for the money. If you are doing a solid color, a single stage paint will be easy to spray and get even color/gloss. I personally prefer basecoat clearcoat in everything, that way I can get even coverage with the color, and then worry about gloss with the clear. Plus you can wet sand and buff dirt, runs, and orange peel out much easier in the clear. I'm not that good of a painter, but I'm a helluva buffer😁