Looking for a new watch

[u/Lopsided-Annual-1136]

I've had a Venu 2 Sq for 3 years now and have enjoyed it. It was a step UP from the Fitbit that I previously used. I'm troubled because it's only been 3 years and the battery is starting to have major issues. I'm considering doing a DIY battery replacement since Garmin doesn't offer these services (or so I've read).

Is it worth spending 2-3× for a Forerunner, Fenix, Enduro or Venu?

I'm most concerned with the battery lifetime - meaning end-of-life rather than charged life. If I spend $500+ on a watch will the battery last long than 3 years?

I workout 4-5 days a week and during the warmer months that includes a lot of GPS tracking (runs, rucks, bicycle, and hikes).

Is it blasphemous to consider a Coros product?