have this for two month and have mostly be good . do take a while to start up , which when you be lose be not so great . but when it be go , it be really good at get I where I need to go and help I when I miss a turn - it recalculate pretty quickly . I be go to contact Garmin about the issue of lose the satellite signal , which it have do on a few occasion and not in area where that might be understandable -lrb- high building , tree , etc -rrb- . I do not have other GPS 's to compare it to , but I think I would buy it again .