Comment Apple and Garmin (Score 1) 254
I've gone through multiple sport watches: Garmin, Suunto, now Apple series 3. The Suunto and Apple watch are both multi-sport watches (Running, swimming, biking). I mainly use them as running watches, but I wear them all the time. Suunto was like a diving watch; so, I only wore it when I ran. For me I want a sport watch I can wear all the -- I don't want to be changing watches to go run. The latest Garmins and the Apple watch definitely meet this criteria. My garmin forerunner 230 lasted a lot longer without a charge than the apple watch.
As for non-sport stuff, the apple watch is much better than the Garmin. The notification stuff on the Garmin forerunner 230 was annoying, but the alerts when I was being called was a nice touch. Notifications on the apple watch are much better. At home or in the office, I don't need to have my phone on my person. In any case, all my gear is apple; so, having an apply watch makes a lot of things pretty seamless. Apple watch was about the same price as my forerunner.
I don't have a cellular capable watch, but I have my phone with me all the time so that's not really an issue. I've been running with my phone for a couple of years to get audio announcements of pace and heart rate. Now of course I have to have two things charged, not just one -- then there are the wireless headphones.
For running, the Garmin appears to be more accurate than my apple, probably because it has both GPS and Glosnos (based on one half marathon), but even the garmin loses accuracy when trail running. The garmin app for the iPhone is better at reporting on your run than Nike run club, but the nike run club seems more focused on coaching. I like the coaching idea a lot because I am in that reading glasses stage of life where I don't get a lot of detail from watch displays when there is sweat in my eyes. Audio cues are the way to go unless you have glasses with a heads up display (e.g., for the serious cyclist) and some way to deal with the sweat. The haptic feature on the apple watch is better than the garmin beeps and vibration for cues (gamin might have improved since I bought my watch). The apple watch also has an integrated heart rate monitor (wrist), which is probably good enough for running, but rumored to not be all that great for HIIT workouts. No chest strap, so less gear to deal with or forget.
Accuracy matters and I'm not sure yet whether the apple watch is accurate enough. During a run, its mostly a sensor platform with some haptic cueing and minimal display. For me, coaching (run plan, intervals, and so on) comes from the phone. Which watch is better during a run depends partly on accuracy, partly on supporting apps, and one's aspirations. Right now, the big differentiator is the apps, which are a mixed bag. Some have better analytics; some have better coaching. When I'm not running the apple watch is a better watch -- my garmin is just a watch. At the moment, I like my apple watch better.