I can see the topic has been answered, but thought I'd chip in in any case;
Was bought a COROS Pace 2 recently for my birthday.
GPS on it is ridiculously accurate, so am looking forward to testing it on the field. Battery life is 2 weeks+, GPS battery life is superb.
If I run for 30 minutes it'll drop 1-2%, whereas on the Fitbit it will drop 10-30%. My Fitbit was dropping from 100% to 23% end of a game, so...
The battery lasts so long because heart rate is tracked in 15 minute intervals (constant when you're on exercise mode) and the backlight is off unless it's nighttime (or you switch it on permanently). Also, it is devoid of crap that a lot of modern smart watches add.
I've been pleasantly surprised with it so far, it's a ridiculously packed watch for the price (£179). No RefSix integration or touchscreen though., but it will link up with Strava or chest strap heart rate monitors. Definitely a watch brand that I'll keep an eye on for the future to see how they progress.
Always take to the field with your backup dumb watch from ARGOS for a tenner though, they last forever and you know something will happen on the field that'll mess things up, so a backup watch is always handy.