Bought the Garmin fenix 6 a year ago and am very happy with it. Never had any problems, would buy Garmin again. I use it mainly for mountain biking, road biking and jogging.
My Garmin Fenix 6 is also still top. (Software version: 20.50) No failure since November 2020, all workouts recorded correctly. Still waterproof, I'm in the pool or lake almost every day. Also for racing bike incl. power measurement, bike and jogging, as expected.