Can't do anything but stick with previous positive speakers about the product. Nothing to add at all except an oh so vital thing, at least for me personally:
Head's up that it does not (always) manage to stream 4K movies via your local network, in Plex! Run gigabit and 3x 7,200 RPM hard drives in Raid 5. The movie files for large pallets are simply not the CPU.
Just google about it and there is more info about it, for example here: https://forums.plex.tv/t/hardware-acceleration-problem-on-synology-ds918/214246/6 and https: //www.windowscentral .com / Synology counter station-ds918-good NAS plex 4k playback
Apparently a well-known problem that I didn't know before I bought it, a bit boring. However, it works fine with Kodi (instead of Plex). Codec has never failed me. Still think that for 6k you could have got a NAS where CPUn pallet with the transcoding better, otherwise it would have gotten 10/10.