What NAS to buy?

[Enquiries]

Looking for a NAS mostly for fast backups of home 2 computers (1 TB each ) on network and then daily backups of any changes. Remote access would only be used rarely, could live without it. Have cat 7 and gigabit Asus RT-AC88U router (8 ports) and TP-Link gigabit switches. Media server would be used rarely as we have fire cube and pandora. Thinking of 2 bay, 6TB each? snapshots sound reasonable to have in case computer gets corrupted somehow or gets a virus. What would you suggest?
Main thing is looking for fast backups and ease of use. No gaming. Thought it would be worthwhile to spend a little bit more for the diskless NAS as I can buy WD red 6TB drives for $125 on Amazon. This would allow me to be future-proof if I want to use media server, remote access, etc later. Looking to buy something on Cyber Monday.
Thanks

[ed]

WD probably will be the cheapest solution. But if you need the fastest option then TS-253D comes with faster 2.5GbE LAN ports and have an option to upgrade to a 5GbE USB adapter or 10GbE PCIe card. Or DS220+ which comes with 1GbE LAN, but people have managed to connect 5GbE USB adapter.With a Celeron based NAS, you get a snapshot option to keep your data safe against ransomware attacks.I hope this helps.