Topo Vs CitiNav

[Not So Fast]

I'm very new to Garmin. I recently purchased the Edge 800. I ride mountian and road. So I'm wondering what the difference is between to topo and street maps. I know the obvious there are no street signs in the woods. What else are the differences or benefits of having a topo?

 

[gtluke]

Topo can't do turn by turn. City has no topo
You can load both of them on the same device though.

The opencyclingmaps nj file is probably even better than the garmin topo one.