How good is Garmin's sleep tracking nowdays

I'm considering and upgrade from my Fitbit Charge 2 and currently looking through my options (Garmin, Polar, Suunto). While generally I'm interesting in more data from my workouts (fitbit has no love for chest straps), I love the day-to-day stuff that fitbit provides, like heart rate and sleep tracking. I'm seeing mixed feedback for Garmin, even high end models like the Fenix 5X. Sleep stages are nitpicking, but I expect it to at least correctly observe when I sleep and how much time I was out, which fitbit does exceptionally accurately.