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.
Unless you have some really high throughput needs, or are putting it in a real weak computer, I recommend software raid like zfs. No need for a real raid controller unless you just need additional sata ports. Heck, even synologys prefer software RAID these days and they have atom or arm processors.