google maps works very well if you have a GPS enabled, or external BT GPS, device -or subscribe to VZ navigator -for Verizon customers. I have noticed -my experiences, that GMM freezes the device if you are trying to use it on a verizon 8330, it tries to active the disabled GPS -here's the need to subscribe to VZ Navigator. If you use it on a non GPS devcice you get a location -close to your actual location, it uses cell tower triangulation.
Bottom line is yes it is good -with the above mentioned stipulations to consider.