Apple Watch feels like it should be the best, but it's so tightly linked to the Apple ecosystem that if you're not all-in then it's the worst option (cannot update it if you don't also have an iPhone)
Garmin looks great, and their watches are good, but their integrations with Apple or Google is weak, and they have so many strange quirks to them (just yesterday my partner's Garmin was out by 90 minutes for most of the day which baffled me as surely NTP + sync time via bluetooth with the phone!?)
Suunto actually is great, except their heart rate tracking is pretty average to awful, which is a real shame as the devices are otherwise excellent
And then the Google Watch ecosystem... watches that all feel laggy, 2nd class, and just lacking polish and finish, even the Pixel Watch just feels cheaper than it should
There's so much potential, but everyone slightly misses the mark for a different reason. I stick with a Casio G-shock which isn't smart, but works exceptionally well for the little it does, but I check out smart watches a few times a year... and it feels like digital SLRs, for a long time they were worse than a film camera, and eventually they were better... smart watches are still in the territory of worse, I'm hoping they continue to get better