When I was looking at smart watches 9 months ago I considered both Garmin and Apple. Note I have used Garmin GPSs for years and have an Edge. I had been watching heart rate just for tracking and recovery while riding.

Anyway look at what data you and the doc suggests since the suggestion came that way. Also what you want to do with it. I got the Garmin Fenix 7 Pro Solar. First it is more rugged. I hit the asphalt at 25 mph and scratched the bezel the first week I had it. The crystal shrugged it off. The Apple would have broken the screen.

The Fenix has ECG (EKG) and at the time Apple did not have that feature at the time. The health check does O2 , heart and breathing rate. I like I can use it to record a ride if I forget my head unit. But I imagine if you use an iPhone the Apple Watch may pair better for you.

As others said check out DC Rainmaker. He has some comparison videos.

https://www.tomsguide.com/face-off/a...atch-vs-garmin

https://www.dcrainmaker.com/product-...son-calculator