When it comes to painting supplies, if it sounds too good to be true, then it usually is. There's really no substitute for quality painting tools, adequate preparation, and careful work. "One of the easiest things to remember about paint tools is that you get what you pay for," says Lou Manfredini, home expert for Ace Hardware. "The biggest mistake I see homeowners make is that they buy cheap tools that don't give them good results, or they buy cheap paint—then they end up with a poor finished product."