this thing be very cool . find satilite and plot course quickly . amazingly accurate . I have have this for a couple of month now and use it daily mostly for fun . if you make a wrong turn it quickly recalculate a new route if you do it more than once it seem the voice sound unhappy with you for not follow its direction . I do the on line map and firmware update but it still doesnt show a major grocery store that be build over 3 year ago maybe I need the map update send on disk which be avaliable at a extra charge the store that be list show address distance form you location and phone number , which be very handy BUT AS for the sound factor . the speaker be on the back of the unit face away from you . if you be drive at freeway speed with you window or even crack open or if the radio be on you cant hear the direction -lrb- make I happy I do not buy the blutooth model -rrb- if you be lay next to the windsheild I bet you could hear it just fine if the speaker where on the front or even have something to direct the sound forward I think would help a lot other than the voume I be very happy with my purchase if I have it to do again i would buy the bigger screen