Mconnect is not the greatest at what it does, from what I read .
The Zen has NAA as client and if it is the same system built into the Neo stream, then that's a very reliable connection.
NAA works only with HQPLAYER , that software also supports QOBUZ.
Not cheap, but I know it works. You can also use Audirvana Studio, also a reliable connection. Both offer excellent SQ to boot.