as a QC Inspector for the nation largest cable tv provider , I drive all over state , and it be great to have a gp that work . I be able to enter multiple address of location to visit , optimize the route and take care of business . the only two minor issue be : the first , I would like to have option of have the farthest job first from start point when optimize , versus the closest from start point . the second be when I re-route due to road construction or something similar , the unit take a few moment to respond so I be leave in limbo on the street . do not let these two minor issue sway you decision on not get this gp . the positive be : the screen be exceptionally good size to see while drive , the audio can be hear over radio , the map be update for lifetime via computer download from Magellan website , there be also a traffic alert button to advise of any possible issue ahead . all in all , I give this gp device 4 out of 5 star and would recommend to driver for work or pleasure .