Garmin edge 810

What are the basic maps like on the Garmin 810? Don't wan to spend extra money on the navigation if I don't need to. Also can you make your own courses on the 810 without the navigation extra?
Nothing compares to the simple pleasure of a bike ride. --John F. Kennedy
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http://talkytoaster.info
I'm using 'British-Isles+Contours-Routable'.
If your budget is tight and you don't need the new features like smartphone communication, the 800 is currently about £100 cheaper for an equivalent bundle.