The Edge 200 will do what you want and is reliable. Navigation is a bit basic and is just a case of following a line based on a pre-planned course with basic instructions but it works consistently, unlike on the more expensive Garmins.
Apparently a firmware downgrade to 2.4 sorts out the issues with courses on the 500, but my unit refuses to install (freezes on "loader loading").
The Edge 200 will do what you want and is reliable. Navigation is a bit basic and is just a case of following a line based on a pre-planned course with basic instructions but it works consistently, unlike on the more expensive Garmins.
Apparently a firmware downgrade to 2.4 sorts out the issues with courses on the 500, but my unit refuses to install (freezes on "loader loading").