I'd like to get a watch that would be good for heart rate monitoring and GPS. I'm not quite sure where to start. I think I like the Garmin, but I'm curious to hear opinions. Fit bit, Garmin, Apple Watch...Im up for anything. I don't want to limit it on price. I'd prefer to get the watch that seems most reliable and accurate. Important to me is tracking activity. I'd like for it to sync with Map my Ride or Strava or both. Waterproof would be nice. Cell connection instead of Bluetooth would be nice, too, but I'm not sure if any offer that. Has anyone tried a few and had success with a particular brand & style? Thanks!!