I currently have a Fitbit and am generally happy with it. By that I mean in terms of fitness tracking, but I'm looking to upgrade to more of a smart watch. I'm looking at the Fitbit Versa and Apple Watch Series 3, with me currently leaning towards to Apple Watch. I would appreciate feedback to the following. 1. I have an iPhone 5s, which I see the Series 3 (non-cellular) is compatible with. What is the likelihood of this device being supported when Apple announces the new version of watchOS next month? 2. I am most interested in using the watch for tracking my walks (I would also like to check and deal with messages and notifications too). I use Spotify on my phone while walking. Can I see what song is currently playing on Spotify on the watch, and can control Spotify on Apple Watch in terms of playing, pausing, etc? 3. I have relatively small wrist and tried on the 42mm and 38mm. I much preferred the 42mm, but I forgot to check how the sensors on the larger watch rested on my small wrist. Does anyone know if the sensors on both sizes are the same and if they encountered any issues in this respect? Thanks in advance.