I lost my cue sheet to a strong gust of wind once, and stopped using paper to not get lost.

You can "design" (plan out) a route using Garmin Connect, or RWGPS, or other tools, or even download one that somebody else has put together for you. That will work with the 520, and it would work with the Edge Touring. They tell you when to turn, whether they can show you a map or not, or whether you're looking at a map or not.