Garmin Fenix 5
I'm definitely not a "wearables" person, but I love the Garmin and now use it for running, biking, trail running, and hiking. It has a nice app that allows you to see, in effect, how well you did during your exercise. That might mean seeing heart rate zones, or elevation gain, or miles run... it depends on what you consider to be success. When I'm hiking, I use the compass to help identify landmarks for photos, and the elevation gain is always helpful (so you know how far long you are). When I'm done, I use the app, in conjunction with photos I took, to help publish the story of that day's adventure.