Paint sprayers have an obvious advantage: They can spread paint, stains, and clear finishes faster than any brush or roller. But just as important is their ability to apply an even coating to uneven surfaces like window shutters and stair balusters — fertile ground for brush drips. And because sprayers atomize liquid into a fine mist, they can create a mirrorlike finish on cabinets or furniture where even minor brush marks are unacceptable.