Hi Hubbers! I have been using my Edge 520 device since Nov/Dec 2015 and I have had very little complaints. I attempted to use the Courses function this past weekend .Very simple (in theory), you plot the route on GC and download to the device. Then you 'start' the course and ride towards the start, it picks up that you're on the course and it takes you from there. Could someone who has used the Courses function often please help me: When your Map is displaying (when the line is purple), it only gives me 2 options to display along with the route, speed, elevation or whatever. But under the Courses function you can choose stuff like Heading, Speed, HR, Time/Dist to Next. What is next? Is that the next turn? Also, is there a way so that ONLY the map shows? Do you have to turn all your other screens off under the Activity Profile? I think the Courses function is very cool, but on the Edge 500 (which I had before) it was very crass, and on the 520 it's not user friendly. I suspect units like the 1000 and 820 Explore have a much better Courses function/interface. Thanks for reading and commenting!