Summary: I used the Navman 320 on a 900 mile trip. It worked perfectly. This is an amazing GPS unit for the price. Screen is clear and bright and it is very easy to program. It picked up the smallest details on turns and routes. I looked at the Tom-tom and Garman which were much more expensive. I'm sure they are good units also, but I can't see how they can provide a better GPS experience at 3x the price.