Its a great unit though.

This unit (Edge 810) sucks.

For whatever reason the unit then becomes confused during the ride and tells me to take a random turn not in the route until after about 100 feet it tells me to complete a U-turn and gets back to the correct route

This units has so many positives but the screen makes it an overall NEGATIVE

The unit is not accurate with altitude, and that was verified with both my cheap altimeter speedo, and the iPhone altimeter app

Haven't checked battery on a long ride, and the gradient response does seem to be slow as noted in an earlier review, but otherwise seems to be a good unit.

As mentioned above, the unit inexplicably and unpredictably freezes without warning

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

I am sure that Garmin will work all of these bugs out in the next year and that I will come to love this unit as much as I did my 810, but I just wish Garmin would do more QC on their products and not make customers do it for them.

The 820 is a nice unit and a nice package with some great features, but it is not stable

Should have never sold my GPSMAP 60 CSx....a truly great unit

Good:- Best Garmin unit out right now

I bought mine in August and the unit have been plagued with issues

In trying to squeeze decent (not great) battery life out of a compact unit with tons of features, I think Garmin massively under-powered the CPU on the 820

Again, I suspect this has to do with the CPU and the many functions the unit is trying to support

Love the unit and sensors

It's small and a good-looking unit

The unit is a complete joke

Also during my happy time when my original unit was working, I talked my husband into getting the same unit.

My Edge 705 is a much superior unit in this regard