To choose the best interior paint, you will first need to decide whether you want latex or oil-based paint. You will then need to determine what type of finish you want the paint to have; flat or matte paint, eggshell, satin, semi-gloss, or high-gloss. Each type of interior paint may work better in a different location or for a different purpose; so, it is important to consider the advantages and disadvantages ahead of time.