I've heard good and bad things about the Garmin topo maps - which is why I went with On X since I've read & heard nothing but good things about it.

geocaching).Now for a couple of super annoying things that I am going to help you with.1.

There are some funky things, like a menu on the main page and then a different but related menu when you push the "on" button on the right.

One bad thing, the Garmin plug-in that is supposed to let Caltopo talk to the GPS doesn't work.

geocaching).Now for a couple of super annoying things that I am going to help you with.1.

One good thing about this is that my microSD card with the 24K topo maps works fine in this unit, even though the card is >8 years old.

The ability to make different profiles for different activities is awesome, so when I ride I can see the important things like speed, cadence, grade, etc., or running i can see more time based info like pace, or hiking more navigational based things like elevation, bearing, etc