Something like TVS-h474 seems quite nice for a wide range of uses.
I have TVS-h1288X and I am really happy with it, maybe it's a bit overkill for most.
That said, I could not use zfs send from my prev fbsd server, there are some compat checks in QNAP's version. Used nfs to migrate from my decade++ old pool.
Using Tailscale for access, they have QNAP builds on GH.
QNAP forked from OpenZFS a long time ago, before the ZoL project was renamed the canonical OpenZFS project IIRC, and has been reimplementing whatever they wanted for some time.
So it's not just a check for check's sake, I would suspect in practice their send/recv is just completely incompatible at this point.
I have TVS-h1288X and I am really happy with it, maybe it's a bit overkill for most.
That said, I could not use zfs send from my prev fbsd server, there are some compat checks in QNAP's version. Used nfs to migrate from my decade++ old pool.
Using Tailscale for access, they have QNAP builds on GH.