Because I have no self-control, I just got a Misfit Vapor X that was on sale on the Misfit site for $59 -- case only, without strap or charger. This wasn't a problem for me, since I already had a 3rd party band for a Falster 2 that's compatible, and the charger for the Falster 2 also works on the Vapor X. It's been quite nice so far -- stylish, light, reliable continuous HR monitor while doing a workout. It's a Snapdragon 3100, but that's not supposed to give much of a performance advantage over the older 2100 -- I think it's primarily for battery life. It also only has 512 MB RAM, so not as snappy as the 1 GB RAM watches.
For my purposes, though, it's quite nice, especially at that price. (Misfit recently lowered it to a ridiculous $39, but they're all gone from the site now.)
In regard to mentions of bugginess -- that's not quite what I experience. The main problem for me is severe lagginess for a while after a cold boot, presumably due to apps and services loading into RAM slowly. In general, if I power on one of my Wear OS watches, I leave it alone for about 15 minutes before I start doing anything with it (like setting it up as a new watch, or trying to update apps). But after the system has settled down, I've had generally reliable performance from all of my watches in terms of notifications, Google Fit, etc.
Here's my list of Wear OS addiction, from most recent:
Misfit Vapor X
Skagen Falster 2 (currently sent back for warranty repair, back of case fell off)
Michael Kors Access Grayson (two of them -- they were on sale at TJ Maxx for $99)
LG Watch Style
Huawei Watch (gen 1)
ASUS ZenWatch (gen 1, stopped using a while ago)
The older LG and Huawei watches still work quite well (although the LG's battery life is mediocre, and the Huawei's screen has significant burn-in).