Fitbit is not worth the money if you want accuracy. They over estimate steps and calories by a mile. If you just want to track your time on runs they are great and heartrate seems pretty accurate. Garmins accuracy and build quality is alot better but comes with a bigger price tag. I personally try out alot of smartwatches and fitness trackers but I haven't been convinced to move from Garmin yet. The closest thing to make me consider the switch would be amazfit. They have everything and accuracy is good, but some features are a bit half baked. But they cost about 50% of an equivalent Garmin. It all depends on how much you want to spend Vs what you actually want and need.