I had a series 6 for a handful of years, great watch. I can definitely tell the upgrades though to the 10 and really like the little bigger face. Really fast processing/delivery time as well. Way to setup as I went from GPS only to a +cellular this time.
Nice watch overall. Only a couple irritations, such as the face never going fully dark. If I turn “always on” off, then I have to wake the watch up to even read a text/notification.