If I was a runner, I'd probably go with Garmin. But mainly I want to use a weightlifting app to track my sets. Currently I use my phone, and REALLY looking forward to leaving that at home. Pretty much any Androidwear watch would do, but I decided it would be nice to have a HRM and GPS.
Also looking forward to trying an app that supposedly tracks your sets based on motion! I'm guessing it will be terribly flawed and inaccurate, but still excited to try.
Plus there's those bluetooth locks that will enable me to even leave my keys at home.
I'm just not sure what these reviews were expecting. What I've read has said the GPS is the best of Sammie/Android/Apple on the market, and the HRM is also as accurate as any (though the wrist models are all not that great). Most of the complaints seem to center around battery life - but is there really a difference between a day or day and a half? OK, GPS drains it fast, but how many people regularly go on runs longer than an hour, much less 3?
You could probably quibble with the lack of waterproofing, as it does seem a fail to be a "fitness" watch but not be able to wear it swimming.