Garmin 800 edge user here. The unit on the bike is great, no problems there. My issues have been with the Boab unfriendly connect and express software and in particular Garmins absolutly hopeless user support. They really are useless. The old connect 'classic' was ok...so why try to fix something that isnt broken...in th ename of upgrading it...the new garmin 'modern' isnt easy for me to get to grips with although i am trying hard. I do like that it automaticly syncs to strava so as soon as an activity file arrives in garmin 'modern' it appears in strava as well. Iwould never relay on the strava in a phone app simply because many of my rides are longer than the battery life on my phone.