I have both an AW 5 8 and a FitBit Versa 2. FitBit's battery life is incredible. So are their prices compared to any offerings by Apple. I can mix and match, but each pairing integrates do a different degree.
I wear my Versa 2 when I'm using my Google Pixel 5.
Apple Watch with my iPhone 13 PM.
This is my second FitBit Versa 2. The first one froze up during charging and was unrecoverable. I emailed FitBit about it and they sent me a brand new one for free. Didn't even want the old one back.