@vthokie83 been there done exactly that. Unless you’re planning to upgrade your DAC, I’d suggest trying the Aurender N150 with your Pontus. I own both the N150 and N200 and when tried with my Pontus, there was no significant difference in SQ. Now once I tried the same two streamers with my Terminator Plus, the up tic in SQ was quite noticeable.
@rgottschalk with your system I’m very surprised that you did not hear a rather significant difference in SQ with the Zen mini. While the Cinnamon USB could be improved upon I don’t believe you will still hear much improvement. Did you give things time to settle in? Not being blown away I could possibly understand, but something else was going on to not hear any difference. If you haven’t sent the mini back, I’d suggest trying things again taking Roon out of the equation. Not really sure how Roon could be the culprit either but again with your other components, it’s the only thing I can think of that's preventing an improvement.