When you refinish your existing cabinet doors, you get a whole new look without the astronomical costs normally associated with a kitchen remodel. It’s a much smarter way to update your space, especially if your cabinets are still in good condition. It doesn’t make sense to throw out perfectly good materials, just because you’re tired of the color.
Deciding which paint to use has gotten much easier now that acrylic latexes have pushed oil-based paints almost to extinction. The acrylics offer superior performance (they don't harden with age, the way oils do, so they move and breathe without blistering), they don't mildew as readily, and they emit fewer VOCs, so they comply with new air-quality regulations. They also work over both oil- and water-based primers.