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.
I recommend building your own. Just get something that can hold a lot of disks, and then put in however many you need for your data and redundancy. I like XigmaNas for the software because RAIDz. / zfs.