Both these miter saws serve different purposes but both are very useful for woodworking. A homeowner can choose either as per their specific need: For smaller projects a 10-inch miter saw is fine but for a bigger one, you should go with a 12- inch miter saw. My recommendation would be to go with a 12-inch miter saw because its high power motor can produce fine, precise cuts in minimum time. Though it is a bit pricey it can work with both 10-inch and 12-inch blades.