The maps for the S100 are provided by Navteq, and cover just single countries, which is perfect if you don’t plan to take your caravan or motorhome out of the country. If you want to go abroad in Europe, you might be best looking at the Garmin Nvi 255W, which our next sat nav to investigate. The Garmin NÜvi 255W is still within the budget price range with online prices ranging from £104 to £165. It too comes with a 4.3 inch 16:9 touchscreen. The Garmin, however, lacks the extra features that the Navman comes with such as pedestrian mode, Traffic Messaging Channel and ‘text to speech’.