When to Buy a Galaxy Watch?

I want to get a Galaxy watch and I always have. I'm going to buy a watch at the same time I upgrade my phone to the S25U. I'm not sure whether I can can upgrade now to Galaxy Watch 7, or whether I should wait for the july/august unpacked to upgrade to the Galaxy Watch 8 when it releases. I haven't really paid much attention to Galaxy watches but from my impression it seems like Samsung doesn't really change or add much year to year.

I've recently just gotten into running and working out so it'd be nice for the watch to track my body so I can keep good pacing. I also want to try the sleep tracking stuff and see how I could improve my sleep. But I've heard a lot of things about how Galaxy watches are pretty bad at tracking these types of things so I'm not sure.