Have long foraged and compared - and found each time Navi. Then the decision: When users occasionally I need no DAB + and no glass display. But 6 "it should be. First impression after installation and update: My Windows 8.1 PC had the device well recognized - but who went on the update of the maps he sought suddenly Navi again. After installing the firmware updates so end with Lustig. So put the MacBook and already flipped it with the update of the maps. After 2.8 GB and 1:45 hour everything was. Device I really like. Had the first start but some problems to find the satellite. Then everything went as expected. Am looking forward to the long-term test.