Wireless NAS device

G'day all

I wonder can anyone suggest a good NAS device which can be installed on a standard WiFi network and mapped to by windows clients and so accessed as a backup drive by, in this case, 3 Windows computers in an office..? Obviously $$$ are a controlling factor here, I'm pitching at something under $500...

Alternatively, a device which connects via ethernet into a WiFi router would do I suppose (assuming it can be mapped to from Windows clients).

I was looking at this WD device, but the sole review is less than glowing....

https://www.pbtech.co.nz/product/HDDWDX8242/WD-My-Cloud-Home-4TB-Personal-Cloud-Storage?qr=rec-footer-view

Thanks if you can..

cheers

frank