I originally was going to buy a Garmin and bought an AW3 when it came out, I thought I was missing out on sport metrics so sold it and bought a Garmin, then realised that I missed the the smartwatch features that I never initially wanted.I wrote a longer post over on the Garmin forums about this but the TLDR version is.
To get a version of the Fenix that I'd want would mean sapphire glass, which is hard to see. I much preferred the Gorilla Glass on my 6X.
The Epix is the better answer but it's battery life is a stretch largely because music / podcasts eat Garmin batteries. Definitely better than an AW however.
Then I thought, any of these are at least $900 to get a version I would want. I can buy 2 AW's, non cell for the same money, and one would always be charged. In other words, charging problems solved.
And Garmin just doesn't offer that much, even in the fitness metrics, that are better than an AW at this point. 3 years ago I had a lot of craziness with Apple tracks but not any more.
Had Garmin included Siri support (like the Venu 2) this would be a different discussion but these are pretty close to a F6 except things like GPS and HRM are supposed to actually be reliable on these versions. I'm just not feeling the $900 this time around.
The Epix 2 has piqued my interest but then I saw the price! In reality all the firstbeat stuff is reliant on accurate HR readings, have maybe a couple of bad readings (cold outside etc.) and it skews the whole algo.
I don't like round watches, I want seamless integration with IOS and my AirPods, (I'm guessing there would be a few dropouts issues with the Garmin). With Workoutdoors I have all the maps anyway. The only downside is I charge everyday, is it REALLY that big a deal?
Conclusion - I'm staying with the AW!