Ask HN: Good Home NAS Solution?

I want to get rid of my bulky desktops, in favor of smaller machines, but this means finding another solution for housing hard drives. There seem to be a lot of choices out there (QNAP, Synology, etc). Any suggestions/warnings? My ideal solution:

- support RAID

- backup to the cloud automatically (preferably using my own credentials, and encrypted)

- not super expensive (whatever that means)