Is Tizen better or worse than WearOS?
I think to some degree it comes down to personal preference. I love the wide variety of apps and faces available on Wear OS, but I've heard from many users who found Tizen to be more reliable in terms of notifications and data syncing.
Ican't tell you how well it integrates with Samsung health as I'm rooted and that stops Samsung Health from working.
lol, seriously? That's ridiculous. Wouldn't want you to cheat on your workouts.
Thank you for the honesty El Presidente! After a little further research (extremely quiet at work today

), I have been looking further into the following:
TicWatch
Huawei Watch Sport 2
LG Watch Sport
The TicWatch Sport looks appealing but I'm not keen on not being able to change the strap if it breaks.
I like the look more of the Huawei (the changeable straps are also a plus), I'm just wondering if the Huawei is now a bit dated, or will it stand up to the TicWatch?
I keep hoping that we'll see some new worthwhile Wear OS watches announced #soon, but so far I haven't seen anything but iterative improvements across the board. Most watches are essentially the same. They all run the exact same Wear OS software, with slight variations in pre-loaded faces and apps. The real differences are hardware like sensors, speakers, onboard GPS, NFC for Google Pay, and scrolling crowns for navigating menus. They also are all crippled by the
same dated processor, which means none of them will get particularly great battery life -
especially if you opt for an LTE-equipped variant.
I picked up a secondhand LG Watch Sport two months ago, after using a ZTE Quartz and OG Huawei Watch before that. The LGWS provides arguably the best Wear OS experience I've tried yet, and I
love the scrolling crown, added hardware buttons for quickly launching apps, and Google Pay. I'm significantly underwhelmed by the battery life and keep a spare wireless charging dock at my desk in case it starts to dip too low. (On that note, the wireless charging is also the best charging method of any of the watches I've tried.)
If I were in the market to buy a new watch now I'd have to give a serious look to the TicWatch S which is $100-150 cheaper than the other two on your list and should offer a pretty similar experience - minus NFC and a scrolling crown button. You'll have to decide if those are features you're willing to spend more on.
I think I read the Huawei was scheduled to get the most recent wear/Android P update so it might be ok in that regard.
Most recent devices will likely get the P update - but it's currently being
(publicly) tested on the non-cellular Huawei Watch 2 models. The Oreo update was tested on the LG Watch Sport so I guess they're just passing that reference status around.