Garmin
Forerunner 255 Series
Long battery; but wrist HR tracking is inconsistent.
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Some are better about privacy than others. Fitbit is the first with data but Garmin doesn’t share your data (or at least the old vivosmart watch I have doesn’t)
I have a Garmin Vivo 1 I never got around to selling. If interested, DM and make me an offer. It'd mean a lot for it to go to someone else going through this
I actually ended up getting a vivosmart to wear on R wrist that’s a little more discreet. On non workout days or when the epix is charging I’ll wear it with my mechanicals.
I’ll be the first to admit it’s not perfect, you do have to sync to the Connect app. But if you do it right, your step tracking, health metrics, and sleep metrics should be OK! I would just not recommend the vivosmart for running without your phone since it lacks its own GPS.
I was a big fan but the more training I do the more I realize that it mostly confirms what I already know. If it says I slept poorly and HRV is low, it's probably because I slept poorly and don't feel up for a big workout. At this point I probably don't need it, but I keep it on my wrist anyways. The biggest benefit I've found is that it can help alert you when things are going pear shaped. If you're usually at like a 42 HRV, and it starts dipping consistently, then it may be time to change something or you may be getting sick or something like that. I noticed my spO2 was dropping and my breath rate was up and it turned out that I was in the early stages of pneumonia. Anyways, I use an apple watch and the metrics are fed into coachcat, but I may dabble in athlytic soon. The apple sensors are the best but apple health doesn't really give you actionable info with their home app. Garmin has usually been mediocre for me (735xt and vivosmart bands) while fitbit was actually really good (luxe was a nice compact band).
Moonwatch SS and a Garmin vivosmart daily. The vivosmart is small and discrete. It gives me simple notifications, battery life is multi day, and does basic health tracking. Doesn’t feel like I am dual watching. Garmin Fenix 6 when I am exercising or doing something manual. Large readable, light to wear and hardy. No risk of damage for the nice watch.
I have the vivosmart, its sleep tracking is crap. Doesn't the Fenix do sleep tracking as well?
Garmin
Forerunner 255 Series
Long battery; but wrist HR tracking is inconsistent.

Garmin
Forerunner 955 Series
Best value, clear MIP screen; limited smartwatch features.

Garmin
Fenix 7 Series
Durable, multi-week battery, flashlight; high price, buggy software.
Garmin
Instinct 2 Series
Rugged, solar multi-week battery; bulky, small screen readability issues.

Garmin
Enduro 3
Multi-week solar battery, lightweight; but bulky form factor.

Ranked #1
Oura - Oura Ring Series

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Apple - Ultra Series

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Garmin - Fenix 7 Series

Ranked #1
Garmin - Fenix 7 Series

Ranked #1
Garmin - Forerunner 255 Series

Ranked #1
Oura - Oura Ring Series