I have had two Synology boxes and they were my first foray into servers and backup at home. I'm an amateur, or was, and always will be as far as enterprise things. My recent synology 1019+ acts as an awesome plex server using docker only because it still has intel graphics transcoding. Most recent Synology boxes have moved to AMD or intels that don't have intel graphics. For that reason and that reason alone, I'd get a small box, my preference is linux, but a small box with igpu. That means you'd still need a proper nas for media. Maybe just slowly update the disks in your old synology, or do a DIY, or learn something. But honestly for my nas purposes, I just trust synology, and I have learned all sorts of other options along the way.
I have had two Synology boxes and they were my first foray into servers and backup at home. I'm an amateur, or was, and always will be as far as enterprise things. My recent synology 1019+ acts as an awesome plex server using docker only because it still has intel graphics transcoding. Most recent Synology boxes have moved to AMD or intels that don't have intel graphics. For that reason and that reason alone, I'd get a small box, my preference is linux, but a small box with igpu. That means you'd still need a proper nas for media. Maybe just slowly update the disks in your old synology, or do a DIY, or learn something. But honestly for my nas purposes, I just trust synology, and I have learned all sorts of other options along the way.