I OWN THE NAVIGON FOR 2 WEEKS AND WAS VERY DISEPOINTED.TO START WITH THE MOUNT CAN BE USED ON CAR WINDSHIELD ONLY AND I DRIVE A TRUCK SO THE WINDSHIELD IS FLAT AND I COULDN'T USE IT.AT NIGHT THE SCREEN IN THE LOWEST BRIGHTNESS IS TOO BRIGHT AND ANNOYING.I WANTED TO KNOW SPEED LIMITS NOT JUST ON THE INTERSTATE BUT ON US HWY BUT THE NAVIGON DON'T HAVE THAT INFO.I HAD TO RUN FROM CHICAGO TO DETROIT AND HAD TO USE SOME TOLLS BUT DIDN'T WANT TO GO ON IN TPK AND OH TPK SO I HAVE TRY TO GET THE ROUTH CHANGED AND THE UNIT WAS VERY SLOW TO CALCULATE.ON INTERSTATE THE NAVIGON WILL TALK A LOT MORE THAN REQUIRED AND IT WILL NOT BE JUST " GO 100 MI " , IN INTERSTATE DRIVING EVERY CROSS INTERSTATEWILL TELL YOU TO KEEP GOING STRAIGHT EVEN THAT YOU KNOW THAT.IT WAS ALSO HARD TO GET TO THE POI THAT I WAS LOOKING TO FIND AND WAS HARD TO ONDERSTAND HOW TO PUT A POI IN OR HOW TO USE MANY OPTIONS.IM TIRED OF WRITINGTHERES MORE BUT YOU RTY IT FOR YOURSELF