I've gone from a Fitbit Charge HR to an Watch S2. Everything about it is great i'm still learning lots, but i'm a bit sad the workouts and heart rate details are just so limited compared to what fitbit offers. The Activity phone app only shows you your average heart rate is for the session, it doesn't show any sort of graph of your HR over time during the workout. (it's just really satisfying seeing when you really pushed yourself during your workout then just one average Also i was really sad to find out that the Nike+ Run Club (running) app hasn't been updated to include GPS yet. seeing the route of your run is another great thing, but i guess they will update the watch app when their watch edition comes out. i made that mistake yesterday so i'll have to try and do both Nike and built in activity run app next time. Is there another goal beside "KJ / move rings? i really have no interest in calories burnt, i'm much more about the total step count and distance? I'm really thinking i'm going to have to keep wearing both for fitness tracking. Most of my health data comes from Nike Running and fitbits offerings, but it's hard to make the switch to apples health when fitbit continues to be more compelling. If only they love each other enough to work together on their data. Any tips in converting would be great.