[ksec]

You buy Synology for their Software. Otherwise their Hardware are comparatively weak for the same price.

One thing to note about Synology, is that they dont update their Linux Kernel over the life time of its product. I am thinking if they are making changes considering there are products being sold not long ago with very outdated kennel.

And considering the amount of polish and fixes inside BTRFS, you might want to look into it if it could be a problem for your use cases.

Generally speaking it is good enough for most consumers.