Garmin Edge Touring - Quality of the maps I currently have a Garmin Edge 200, which I like quite a bit. But I would like a GPS that has mapping capabilities. I don't need the training features. I'm curious about the quality of the maps in the Garmin Touring. It looks like they are based on some sort of open source maps. Does anyone have this unit and can comment on the quality and accuracy of the maps?
The Edge Touring comes with a preloaded "Garmin Cycle Map". This is based on OpenStreetMap, so you can check the OSM website to see how good coverage is for the areas you are interested in. In general, OSM is rather good for roads in most of Western Europe, and much of the USA. Many areas also have lots of cycle paths and trails mapped. It is often more accurate and up to date than other maps. Plus if something is wrong or missing, you can edit the map to fix it.

The Garmin Cycle Map is designed specifically for cycling, so highlights relevant features, eg cycle paths. If using the navigation, it is designed to route you along paths or minor roads where possible. And it contains height data, so it can show elevation profiles or route to avoid hills.

Note you can download other OSM based maps in Garmin format for free, then put these on the Edge instead. These are available in a variety of different styles, which you may prefer. Also they may be more up to date, which is useful if you are adding of editing things on OpenStreetMap.

Or you can buy other maps from Garmin, eg City Navigator, then use these on the Edge. These can be expensive, depending on how large an area you want. And City Navigator only contains roads, not paths etc.