It depends on the situation. In most cases, rollers are superior in quality. They give a smooth finish that is not possible with sprayers. They are much easier to clean and very safe to use. Brushes, pads and rollers are all available in different sizes, making it easier for you to choose one that is suited to your project. Further, rollers do not get clogged up as easily, so you can finish the job more quickly. However, painting with a roller can be very time consuming, especially if you are doing a large project. If you decide to paint with a roller, you may need to apply a second coat. This takes more time than spraying and requires more planning.