we have a build in GPS in we vehicle but decide to purchase the Nuvi 1450 LM -lrb- refurbish -rrb- for we upcome vacation . it be almost cheaper to purchase this than to rent a gp at the car rental . have be use it for several week now to make sure we know how to use it . really like it - bright screen , good adjustable volume , and direction that be readily understandable . in some way I like it better than the install one in we own vehicle . be a little concerned about refurbish but have have no problem . Make sure to read the direction and then play around with some of the feature until you be comfortable with it . I would recommend this item . the one fault I have with this be the downloading of map - mess up my computer for about 24 hr . I have a Mac and run window on it - try to install on the pc side -lrb- big mistake -rrb- . when I take it off the pc side and reinstall on the Mac side - no problem . map downloading be still very lengthy . this item be purchase through Amazon but ship directly from Garmin . ship be free and we receive it in less time than expect .