Got the 830 on Tuesday. It is much faster and uses more satellite formats, but this draws more power if you combine GPS + GLONASS or GPS + Galileo. Color display is pretty.

It does not have bike profiles, so need to enter which bike I am using on Strava. No bike odometer feature, so I need to track that manually (wish one could enter bike odometer readings in Strava which only uses historical data from riders recorded on their platform.)

It uses a micro USB cord, which I prefer. No need to carry the mini-USB cords on the bike any longer as everything is now micro-USB compatable.

It is a tad lighter than the 810. It is shorter and should fit stem mounting better.

Hopefully, it will not be as glitch-prone as the 810.