Apple TV Streaming Sound Quality vs Streamer?

I’m glad I found this thread as well. I’ve been looking at using a Chromecast Audio and / or AppleTV as a streaming device. I saw the iFi Purifier and comments that it really cleans up the optical output. Talked to Rich B at Signature Sound about one of those just yesterday... 

Funny thing... I’ve also been eyeballing the Border Patrol DAC. Steve, thanks for your candor in this thread. If you happen to catch this thread again... You mentioned that the Metrum and Border Patrol DACs "enable the benefits of the SM (Synchro-Mesh)".  Can you elaborate on that?  Is there something different about Non-Oversampling DACs that make them work better with your Synchro-Mesh unit?

Thanks.