I have a Garmin Instinct Solar. I really like the watch, but it's gps capabilities are strictly backup to the gps on my phone (gaiagps). It's a very light and comfortable watch with good batter life (the solar extends the battery life some if you have sun).
What I do use it for a lot is the altimeter. It's really handy when you're navigating to a certain spot and you need to keep pretty close elevation wise, quick glance at the watch lets me know how I'm doing.
The fitness capabilities are pretty nice too- gps tracking, hear rate, etc.
But in the end, it's major job is keeping time
