Own the Navigon 1310 now for a few weeks. However, it is not a day in my application because I most routes know anyway. But if you have an external seminar or otherwise to an unknown address times, there is a great helper. The accuracy of the instructions are great and the service intuitively what saves nerves. What sometimes (very) is annoying, however, that the Navi often "perceived" needs 10 minutes to connect to the satellite manufacture. Here is improvement (acceleration) potential. The price is attractive and just for the "Not-daily-users", the device is a recommendation.