Call me insane, but I actually got an Apple Watch Sport instead of a Series 1 or 2, for 100 Euro under the Series 1 price (new).
I debated this for a while, I'm making the switch (back, after 4 years) from Android to iOS with the iPhone 7 and have been using a Android Wear device for a few years now (LG G Watch R and then the Huawei Watch), so I first tried out the Huawei Watch with the iPhone 6S from my job. But yeah, that's not a good experience.
First I tried Android Wear for iOS, that was okay for notifications (even allowed some interaction with Google Apps from the watch), but you lose every single app and watchface, so that was a shame. So I tried some workaround methods that have you pair the watch to an Android device and then connect via Bluetooth to the iPhone for notifications, that worked... about 10% of the time. So yeah, not a great experience.
Went back to the iOS version of Android Wear and sideloaded some watchfaces, but at this point it's just a notification device and you lose pretty much everything smart about the watch by not being able to install any apps that can communicate with your phone in any significant way. So yeah, it was time to make the switch to an Apple Watch.
So, enough about that. I did my research, compared all the devices. I have no interest in swimming, and I don't run (I walk, briskly, as Apple put it, for 1,5 hours every day) so I always have my phone with me for GPS, so the Series 2 only advantage would have been the brighter display and I decided that was not worth the steep price increase over the Series 1. Then I looked at some speed comparisons between the Series 1 and the original, and decided that I could miss a few extra seconds waiting for a weather update or the maps app to load, if it meant dropping another 100 Euro off of the price. Functionality wise they are both the same, and it's a lot of money just for a bit more speed, just couldn't justify that to myself, if it had been both speed and the brighter display, I probably would have made a different choice.
Got a nice space grey one.
Going to take me a while to get used to not having an always-on display and I'm sad to lose out on custom watchfaces, but that's not going to kill me I reckon. I'm currently waiting for the WatchOS 3 download to finish, it's taking forever to download for some reason. I might post a more in depth comparison between Android Wear and Apple Watch if people are interested after I use the Apple Watch for a bit.