Actually, while I was a bit annoyed at not getting a first day delivery (and I had to stay up until 9:01 PM to start the process - another advantage of living in Hawaii), I haven't been too annoyed since. May be age mellowing me out. I'm 66. But I still like my toys!
And if they make notable improvements in the next watch version in 2016, I'll get that. It's one reason I went with the sport model this time. Have to be pretty big improvements though. A little more power or battery life probably wouldn't be enough. But more sensors likely would. It would be great it it could do blood pressure and/or glucose. Within present abilities, I'd like to see it track heart rate more often. Maybe every minute normally and when doing an exercise program, as continuous as possible.
Looking forward to testing the watch out on one of my bicycle rides.