I had fitbit long time ago, the sleeping time and rest HR tracking is accurate comparing to Garmin, but the construction of the watch itself will not last long if you are very active. I am owning Forerunner 235, the sleep tracking and rest HR tracking is terrible…entirely not reliable I would say. But if you need a OK tracking device, it is great and also it last longer than fitbit. I also own Suunto long long time ago for hiking. It is a great watch back in the day, only issue is the compass failed after a while and could not be fixed unless you sent back to factory to get it repair.