So I began trying to load the route while still indoors, without GPS reception, but that seemed to create unexpected navigation problems and more freezing (see #2 below)

I'll separately post a review there when I've run it through some more paces, but, significant positives include: (i) super-long battery life (I’m getting close to 15 hours); (ii) no touch screen – you use buttons to cycle pages, and also buttons to zoom in and out (both on the map and on data screens); (iii) super-good clarity in sunshine; (iv) the turn-by-turn navigation just works

The navigation is great, better than the 810 which I had no problems with.

So, if you care about intuitive and reliable navigation, I can actually, for the first time, recommend a Garmin unit

The 820 is almost perfect--perfect size, the navigation is great and the screen is clear and easy to see in the bright sunlight.

I'll separately post a review there when I've run it through some more paces, but, significant positives include: (i) super-long battery life (I’m getting close to 15 hours); (ii) no touch screen – you use buttons to cycle pages, and also buttons to zoom in and out (both on the map and on data screens); (iii) super-good clarity in sunshine; (iv) the turn-by-turn navigation just works

As far as the navigation, works great for me.

It crashes often, turn by turn navigation fails (works in the beginning, but then stops to work during a tcx course)

Clear navigation prompts and early signal warning when a turn is coming up

I love the navigation

So I loved it during those few months where it worked as it should most of the time.

So I loved it during those few months where it worked as it should most of the time.