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

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Great watch for running! I have the Apex 2 and it’s great for everything; my only complaint is that in all systems on activity mode it only lasts about 25 hours. Not quite enough to finish a mountain 100M unless you’re really fast. The Apex 4 would definitely cover that, though.
Only thing better in my opinion from my Apex 2 is the labels on maps.
Crazy how literally everyone here is saying Garmin. I use a Coros Apex 2 which can do everything most Garmins can, has a titanium body and sapphire glass, and costs $300 usd.
Coros apex 2 and just swapped to a Coros pace pro
Not a garmin, but Coros Apex 2 or 4 are both solid and probably cheaper than the cheapest garmin that comes with maps. I have a apex 2 and it’s been great for me for running/hiking/skiing
I don't claim to understand the market distribution for any features. COROS has always tried to maximize their battery life and MIPS screens help achieve that goal. Unfortunately, as with all things, there has to be sacrifices when achieving the extended battery life. In the past when compared to similar watches in class COROS has always been made of more quality materials (Ti and Sapphire), IIRC. Is Garmin doing this to their watches now? My Apex 2 has been beat up and still has zero scratches on the screen with no protection. Naturally the titanium has collected scratches. Believing I'm not unique, many in the COROS community came for battery life and better build quality in class. Trading the rich ecosystem of Garmin for something simpler and a better value. Admittedly, I haven't followed watches recently and could be wrong about current value. Although, if the APEX had less battery life, then just make a new watch line.
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.

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Oura - Oura Ring Series

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Apple - Ultra Series

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Garmin - Enduro 3

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Garmin - Fenix 7 Series

Ranked #1
Garmin - Forerunner 255 Series

Ranked #1
Oura - Oura Ring Series