I have the Magellan Maestro 4700 for a long time to love it. I bought the RoadMate 1700 for the big screen and recommendations of the interstate track, not the update program Maestro. I had a problem with the battery Maesto immediately after purchase. Service reserves the right to buy, Magellan RoadMate 1700 for the best price, and the ball is impressive. My new RoadMate 1700 (3 weeks old) will not hold battery charge may, the vocal lines do not always correspond to the visual (unit is "lost" often at the old main street), but what is really a disappointing lack of service. The site provides information contact customer service to Magellan RoadMate 1700 cost of telephone instructions that you send to the site in a "Catch-22" range. 24 / 7 maintenance of the website is a joke. any service call, a joke. Why am I not laughing? I really, really hope that does not use the military these things, otherwise we look forward to running the UAV-bound to our home in a smart bomb. But then why bother? It would turn left or a Magellan RoadMate 1700 price U-turn when you need to go straight.