Hello @cbarn .. I’m also a long time Pebble user and honestly nothing comes even close to the Pebble experience, still I have gone for the TicWatch 3 Pro as the least bad option - expecially because of the always on display - in other words I would not go for any other Wear OS watches.. Anyway you with sleep tracking I need to charge the watch every day or every other day.. in essential mode the watch won’t be able to run sleep tracking as 3rd party apps won’t work..
I would definitely not recommend GW4 - SPO2 sensor is private - only Samsung can use it and they are really killing even what there was good on Wear OS.. recetnly they added a restrition that apps can only run in background if you specifically allow them to in a special hidden menu.. you can read about it here:
Probably to hide the fact that the watch so battery hungry by itself.. when you are actively using the watch you can see how you are constantly loosing % of battery..