I have use other gp system and even those on my laptop and all with some reservation . one day i be in best buy look over what they have for onroad gp 's and come across the Garmin c320 . I be compare several brand there but keep come back to the Garmin . well , I ask the store attendant if I purchase it and later decide it be not what I want could I bring it back . I go out to my car , open the package , mount the unit , pluge it in , turn it on and viola ! , the unit find I . well , I quickly find out that the unit be most intuitive . I have a appointment across town and decide to use it to see if it would take I on the route I always go . nope ! it want I to go another way . in fact , they way it choose I have never even think of . I follow it and get there without a hitch . it voice prompt you so you really never\/rarely need to take you eye off the road . I know right then and they that best buy be not go to get a chance to place they mit on my gp ! Trust I , if you be want a gp unit for you car and you want one that be easy to use , get this one .