We need a new one. We had a Medion many moons ago that never let us down but it went haywire due to old age.We then bought another Medion just over 12mnths ago and its been acomplete pain.O.h. has gone to Borth today and its frozen numerous times on the journey. Im looking for suggestions as we have only experience of Medion up to now. Ive heard good reports of Garmin..are they good or is there better out there?