Before the update was applied it was plagued with random bugs all over the place but most of that have since gone away. I mainly bought the watch for workouts as the cheaper activity tracker I used before didnl not sync well with any apps and was very limited outside of heart rate and step tracking. The GPS can be finicky but seems to have improved post update and with "use wifi to improve GPS accuracy" turned on.I learned that even though it's running wear OS, it's still best to use the native Samsung workout app for tracking vitals and GPS as Google fit tracking is limited still. The good thing though is that with health connect downloaded on my phone, syncing between Samsung health and fit has worked pretty well so far.Since I only bought it for workouts I didn't care that it was refurbished but the hardware had no issues with it. The stock strap is not the best, will be replacing soon. Once wearOS has matured more then I will be upgrading again soon as I'd still just use Google native apps.The step tracking between my galaxy 21 and watch will mostly sync alright but I'm still working on improving this for both devices, was only using tracking on phone before through Google fit. The Samsung health and fit calculations are a bit weird still.. thinking I may just disable tracking on phone eventually..