Garmin 820 - Review please

[Biking4Heart]

I have been considering the Garmin 820 for the purpose of helping my rides to get myself healthier and have some basis to my progress.

Went looking for posts on here for the Garmin 820... What I find is.... More posts getting rid of it than using it.

So, My question...For the people that actually use the Garmin 820. Give me your best critique Pluses / Minuses.

Thank You.

Alan