First ride with the 840, and one thing was really irritated the living daylights out of me... the half a national anthem they play after every climbpro climb!
Is there a way to disable the notification that you have finished a climb? Or maybe even just change it to a more normal single beep? Doing a 200k gravel race over the weekend and if this unit does not want to be thrown into the bushes, I'd rather turn off all notifications. ("Flat" does not describe that ride quite accurately.)
I forgot to turn on auto before the first ride lap, so I'm hoping that this is not the default alert tune - otherwise I'll turn off notification anyways!
Other than that, very good first impressions! More readable than the 530, it at least tracks elevation properly and does not sporadically reboot.