We evaluated many apps to satisfy our requirement to verify addresses on custom objects, and Address Verification was deemed the best. Accessibility to the vendor's personnel is good, and its documentation in getting the fields created manually on custom objects and setting up the simple final configuration was helpful. We decided not to use the recommended trigger and customize how the "Verified?" checkbox works, but I'd say the app is lean and slick: an effective front-end to the SmartyStreets back-end. - Kevin B.