Garmin
Forerunner 255 Series
Long battery; but wrist HR tracking is inconsistent.

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That’s where I’m at as well. I love diving with my Garmins, and I have no issues wearing it 24/7 while on a dive vacation. But it can’t even come close to the functionality of my Apple Watch for daily use, especially at work, but the Apple Watch Ultra also doesn’t come close to the functionality of the Garmin for diving or even some of the activity and monitoring functions. Plus, my original Mk2i is five years old without any issue, so the cost to have both when averaged out over years is reasonable, and not wearing my dive computer daily also cuts down on the chances of eventually damaging it.
Appreciate the side by side comparison, and I’m a little embarrassed to say that your post is the first time I realized that AOD and gestures could both be on for the AMOLED!! Just turned gestures on and I fell in love all over again! I’ve been wearing my descent mk3i since it came out ~2 years ago, upgraded from the mk2i for the amoled, touch screen, and water resistance of the buttons. Having had both, I’m definitely team amoled now. For me I find it more refined in the office and at meetings, easier to read at a glance when snowboarding/climbing/diving (mips was great diving too because it would trigger always on, but same as your pic above the always on amoled is just seductive to me). Thanks again for the gestures to!
I'm really happy with my Garmin Descent. I have the MK2i, but the MK3/3i has been out for a while. There is an S model that has a lower profile and slightly smaller face, while only giving up air integration. It's a fantastic multi-sport watch, tracking activities including running, hiking, cycling, surfing, kayaking, etc. Even has a jump master mode, but I haven't been skydiving in 20 years. Health stats are great and the Garmin connect app is very user-friendly.
Fenix 5x for years, and now Descent mk2i with iPhone. It’s great, but as another commenter mentioned, Garmin is not so much a smart watch, as it is an activity tracker with some smart features. I love notifications and not having to pull my phone out every time it buzzes, but if I want to do more than be notified, it’ll be on the phone, not the watch.
Descent g2. I dive 30 or so times a year. The descent mark2/3 feature of tank pod didn’t appeal to me greatly to justify double the price. In hindsight I probably would have gone with the g1 for the battery life, at the moment I get 2/3 dive days. Or a week of general wear and activity tracking. I love the g2 though, great all round watch, all the features I need, the amoled screen has amazing visibility in and out of the water
I just got a Garmin Descent G2 and I really like it. I have tiny wrists and it’s yet not too much for every day and still seems very functional for diving (I’ll let you know Friday, which will be my first dive with it). I also use it for runs and gym workouts. My husband has an MK2s he’s been using for three years and he loves it.
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

Ranked #1
Garmin - Enduro 3

Ranked #1
Garmin - Fenix 7 Series

Ranked #1
Garmin - Forerunner 255 Series

Ranked #1
Oura - Oura Ring Series