Last year we traveled to France and rented a Tom Tom navigation system with our rental car. It worked great. This year we bought a Garmin Unit ($100) and a Europe insert ($100). It often mislead us, taking us off main routes to wander the countryside on narrow roads. A Tom Tom unit that covers North America and Europe is $160. I do not know how Tom Tom does in the US but it is much better in Europe. Our Taxi driver in Rome used a Tom Tom.