Ideally one that can use more than one disk so that i can expand it later when i can. Have some minimal experience with Synology since there’s one at work and i have interacted with it a couple times and like the interface, but am not married to any brand as long as it works.
Located in EU if it makes any difference.
Synology are very good and have good dedicated models for home usage. Way better than old PC. There are YouTube channels about nases, they compare different brands and models - check them.
“Cheap” is a relative term.