Apple

Maybe one is older? I've heard some people say that after upgrading, they use the new watch for everyday use and the old one for sleep tracking.

Not who you were asking, but I had a series 5, then got the Ultra. Apple offered me only $40 for the Series 5 so I kept it for a while to wear at home since it was smaller and lighter than the Ultra. Ended up giving it to my brother who broke his series 4.

Now I’m missing having a smaller watch so I’ve been looking to add a Series 8 to wear with long sleeves and sleep tracking. I like the Ultra for the beach/battery life.

I’ve considered just getting the SE, but I like the temp tracking on the Series 8.

Well, I am an older guy and I like the fall detection and heart rate monitoring features. I’m also a bit of a fanatic about closing my rings, with multiple watches I never miss a step. I also very rarely even pick up my iPhone anymore and tend to do all my interactions on an Apple Watch. I currently have an Ultra and a Series 9. The Ultra is my daily driver if I’m out running around town. The S9 is mainly for workouts, afternoons and evenings lounging around and for whenever my Ultra is on the charger. I do sleep monitoring wearing my Ultra (not quite as comfortable as the S9 would be for this task), but I have my action button set up to turn on the flashlight so that when I get up at night I don’t fall over my german shepherd.