I still use and enjoy both. I run and cycle with my Garmin and AW, and mostly wear the AW for daily use. I use the Garmin for sleep tracking since it affects the suggested workouts for marathon training.I seem to be in a conundrum between purchasing an apple ultra (may be updated next month?) and continuing the use of my Garmin Epix.
I've been in the Garmin camp for A LONG TIME, and I use the watch to 70-85% of its capability. Typically, I use it in combination with my GPSMap for hiking/trekking, and I use the Epix for running, cycling, etc.
I pair my Epix with my HRM that gives me fairly decent running dynamics like left/right balance, GCT, etc. I also pair with Strava and other apps.
However, I have been mulling over the idea of getting an Ultra because of the ability to untether from my phone. It would be nice to go on runs w/out having my phone. I am trying to unplug from our connected society by leaving my phone at home. However, the safety of being able to respond back to family is important.
Also, I don't know much about Apple's ecosystem on getting good running dynamic data from the sensors like you can with Garmin's ecosystem. I would love to hear what others have done as they went from Garmin to Apple (it seems to be the other way). Also, any apps for good trail maps would be appreciated...lots to learn here.
One last thing, Garmin could improve how they deploy and test their software updates. It's common for me to get stuck with a bad software update or find bugs in their releases...not a big fan of finding out I'm their guinnea pig when I'm miles out on a mtn bike ride from my car.
I’ve tried to go all-in with each one separately but they both lack in the areas the other excels in. I prefer using both.