There's quite some competition even in the same form factor, like QNAP, ASUSTOR or even UGREEN which got their product in not too long ago.
Many people recommend Ugreen, but looking at their entry-level 2-bay NAS it's nearly a hundred bucks more expensive than a 2-bay one from Synology. Sure, it has higher specs and whatnot, but that overlooks the fact that I don't care about specs. I just need a 2-bay device to backup my home devices, high performance is not a requirement.
Ugreen
Ugreen is king, lately.
+1, I replaced my aging DS1812+ with a DXP4800 Plus and I've been quite happy with it.