as far as the mount system go , the windshield mount look and work as if it come out of a 25cent bubble gum machine . it rattle all the time and when it do not it be only because it have fall of the windshield , the stay power be all of about 15 min . the actual Magellan be okay apart from the occasional two city off locator . if I sound sarcastic I be because I really dislike the product .