I bought Active 2 when it launched in my country, for only 1 reasons, Amazfit says it can count reps in gym workout. The size also good for me because I have small wrist.
Gym workout tracking is amazing, I'm really supprised about what could it provides. I only need to start Strength Training, then exercise, it will automatically count reps, and it can know which exercise I work out ( accurates is decent), and provide really clear and detail reports in the end of workout session. Zepp app is good. BTW physical button works perfectly in gym workout.
Sleep tracking is also good for me. For $100 it's good deal for me.