Garmin Edge 510 or 810

[Lemmywinks]

I only have one bike that I ride which is a stumpjumper fsr. Is there any reason that I would need the mapping functionality of the 810 if I only ride off road? Are there any other features of the 810 that would justify the additional cost?

[Wherewolf]

... Is there any reason that I would need the mapping functionality of the 810 if I only ride off road?...

Yes, if you want a map when you ride off road.

[Lemmywinks]

I suppose I need to research the mapping software available to see what my options are and what that added functionality will provide me.