Could be cool. I have the 820, and base map already has every MTB trail I've been on so far.So the "new" 520 plus is basically the same hardware as the "old" 520 but with added navigation. The thing that caught my attention was the addition of the Trailforks app right on the Garmin Edge head units. I was pretty much set on getting a Bolt but the addition of Trailforks to Garmin is enough to sway me into getting a Garmin.
Anyone else think the addition of the Trailforks app to Garmiin Edge head units is a very worthwhile feature?