I recently replaced my Vault 2i with an Aurender N200 . I used the Vault 2i with several good DACs since owning it. It is a great machine. I still use it for convenience and to rip content.
The Aurender is in a different league as far as build quality, support, and sound quality.
While Bluesound support is OK , but their focus is on forward compatibility with new BS devices. Yes you sometimes get new features but the firmware often fixes bugs / known issues.
Aurender will actually get into your device remotely if necessary. They answered my support question fast and their upcoming software revision took care off the issue. This all happened within a few day of my support request.