When I hear complaints about the heart rate not being as good as other devices, we should say this a little different... my other dedicated heart rate devices might work better than my apple watch which does heart rate and 100 things the dedicated device can't even do. Yet, I find the Apple Watch Heart Rate monitoring to be fantastic and dead on with my other devices. I can also work on the yard and listen to music and do many other things these other devices can't do while still tracking my heart rate.
Native apps for me load extremely fast - any app that goes back to the phone are slow. Drafts4 loads instantly, Carrot loads in half a second, fantastical is extremely fast and I also have the glance setup to always have current info without the phone. My banking app has my current balance always there and accurate at a glance. None of these other devices can even do any of this...
You are all right in certain aspects though... there is some slowness to non native apps, the heart rate may not be perfect when OCD has us comparing it to a dedicated HR device that only does HR for $100-$250. Compare it that way...
Do you have another device that can even come close to all the things we are complaining about that the Apple Watch doesn't do as well as our other dedicated devices?
I hated the thought of a square screen when I first heard Apple was coming out with a square screen when I already saw the Moto 360 round screen. That is until I held the Moto 360. Sure, it is round, but it feels cheap and looks so bland. What does as much or more than the Apple Watch that is worth comparing that is the same size and quality of the stainless steel without looking ugly?