Oh absolutely an SSD. Especially now they’re ridiculously cheap! My first ever one was a Samsung Evo 840 and it was crazy spendy. However, it is still in the same laptop which is an insanely resilient laptop. I think they didn’t market it much because it was too good lol.
But now, among my machines I have like two dozen SSDs. They’re so affordable and a lot of good brands.
I’d go with ElementaryOS though because it’s just so polished and elegant.
Yeah I have used Zorin a long time ago and I've seen it in recent times, too. It's okay. It's just never been the best available for me. But each user has their own needs.