^ This. Also, just saw this thread and wanted to chime in. While the Ultra is definitely the top-tier pick, I think its a bit much for most people. I've been using these since the original Gear days and honestly, the sheer size of the rugged models can be a dealbreaker. I wore a bulky one for six months and eventually got tired of it hitting door frames or being too heavy for sleep tracking. If you want something more balanced that still feels premium on the S25 Ultra:

• Samsung Galaxy Watch7 44mm Bluetooth is the one I usually suggest. It has the same internal processor as the Ultra so performance is identical, but it actually fits under a shirt cuff. Battery is decent for a day and a half.
• Google Pixel Watch 3 45mm WiFi if you prefer a rounder aesthetic. I tested it recently and the haptics are better than Samsungs, tho you might miss the BIA sensor stuff. The Watch7 is usually the safer bet because the integration with the Galaxy ecosystem is just tighter. You get the double-pinch gestures and the better alarm sync which I use every single morning.

Galaxy Watch Ultra.