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

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I wear my Garmin 245 Music for working out and running, otherwise it’s my Explorer for everything else life has for me.
I have a Forerunner 245 with Music. It does the job. I have it in aqua blue. It also doesn't cost a gazillion pounds to buy.
I use a Forerunner 245 Music. Relatively cheap, does the job along with a chest strap HRM.
I use an old Forerunner 245 as I got it for running and I can listen to music without having to take my phone. It does the job for crossfit. I record it as either Strength or Cardio. Or if it's a running WOD, then Workout (tracks distance). It just depends on your budget and personal preferences with aesthetics and fit.
I have a FR 245 with Music. It does what I need it to do. It can be a bit judgemental if I have a rest day and/or go for a walk (I have been knocked down from Productive to Recovery - so audacious). I like not having to take my phone with me, especially if it's raining.
I have a venu 3 and love it! Had the forerunner 245 music for several years prior to making the switch to my venu 3 this year. I workout everyday and it has tons of tracking options as well as being touch screen and having all the smart watch capabilities.
I also have the 245 Music, but the battery life is decreasing and am looking to upgrade. Not sure what I should go for. I love the Fenix design and functionality, but it’s a bit pricey. I mainly run, bike and walk/hike. Any feedback is welcome :)
Been very happy with my Forerunner 245 Music - though I rarely play music through the watch since I carry my iPhone for live tracking anyway. It’s only a few dollars more or less, but if you’re gonna carry another device, you could do without the music part of a 255 forerunner
I recently upgraded from the Forerunner 245 Music to the 265 after I broke the strap bracket thingamajig while wrestling with my son. It's taken some time to organize various screens how I like them, but I've really liked the upgrade. The watch has new virtual Garmin coach plans, which I'm using for a 5K race in March. I like that it's mixing in some non-running workouts, which I've always been concerned would interfere with my running. But since "coach" suggests them as part of the plan, I'm ok with it. The 965 has some extra features that were appealing, but I felt like it wasn't worth the additional cost and it was a little big for my wrist.
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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Garmin - Enduro 3

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Garmin - Fenix 7 Series

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Garmin - Forerunner 255 Series

Ranked #1
Oura - Oura Ring Series