That depends on a couple things. One is the type of swing you have; something else to consider are the conditions at your home course. If you have a certain type of swing, and certain conditions exist at your regular course, you'll want to go with more bounce; or less bounce if the opposite factors exist.
So what are those factors? See our FAQ, "Do Course Conditions and Swing Type Influence How Much Bounce I Need on Wedges?"
What is bounce?