What is the best NAS for home?

Question

NAS

2 computers, three android phones from which mostly photos, an iPad (is it possible to throw a copy in the time machine?). Computers on mac os, that is, Time Machine support is required.
* It would be ideal if transparent work with storage was from phones. What does it mean? To automatically merge certain folders in the phone into storage when connected to a home network. Alya google drive\icloud photos.
* It would be ideal if it would be possible to connect via ssh and install custom software.
Required raid array.
Variants
* WD My Cloud Mirror, but there are reviews that say it works slowly
* Synology-DS216j-NAS-DiskStation
* ...
* The most extreme case is to assemble it yourself. But the question of administration of all this frightens. Ready software?
Any of your ideas. Thanks

Answer 1

self-assembly on OMV five years without worries, set it up and forget =)
www.openmediavault.org
ps 78 days ago there was a replacement of one disk, before that 4 years without stopping =)

Answer 2

Synology vs WD Cloud?
https://www.amazon.com/EX4100-Diskless-Network-Att...
vs
https://www.amazon.com/Synology-DS216j-NAS-DiskSta...