I'm on the fence between getting an Ares II (Enya) or Pontus II. I'm assuming my downstream system (Leben CS300XS -> Klipsch Forte IV's) is sufficient to reveal the full potential of the Pontus? I keep reading reviewers who put an arbitrary $ amount on the system (amp+speakers) that it's worth stepping up to the Pontus for at roughly $5K plus? For now I'd be using my old Sonos ZonePlayer as a streamer, via coax or Toslink connection, however the Darko review below though gives me pause: "...I’d argue the potential of the DAC isn’t fully realized until one feeds it upsampled data via the USB or I2S inputs." Maybe I'm not understanding the concept of "upsampled data?" My Sonos doesn't have those outputs. I'd imagine that I'll be upgrading streamer at some point in the near future (when Sonos completely bricks their hardware units operating on S1 operating system), but I don't see myself really going beyond a WiiM Pro, which doesn't have USB or I2S outputs either. Given those factors, is the Pontus still worth it for my situation?