First GPS I have ever buy , but seem to work well most of the time . I really like be able to give it voice command via a microphone . it be a big safety plus . only thing that concern I be that sometimes it tell you to turn leave when it should say right and right when it should be leave . I find I have to double check its left verse right recommendation against the actual map which have yet to be wrong . Acquisition time and sensitivity have not be a problem for I . all of the road in my neighborhood be on the map although some be not where they should be -lrb- gp show you drive about 20 foot away -rrb- . the software be so feature rich that figure it out take a while . do not wait until you in a move vehicle to learn the software .