I have a compass in the truck and mobile Google Map on my blackberry so I thought never have to worry about getting lost again. Wrong. When there is no street sign whatsoever, as in the case of Ft. Lauderdale, Florida after Rita, or Biloxi, Mississippi after Katrina, how do you suppose to turn left or right on to a street without any street sign. So I went and got myself the Maestro 4040 and I am pretty happy with it so far.