If you believe in DAC magic then the Oppo via rca connection, as long as you're only playing 2ch discs. I would simply use the hdmi connection, altho I do like the idea of using two different connectors to setup different eq profiles with the avr. In some avrs' zone usage sometimes the analog connection is an option for more audio options to the zone, too (I have one player/avr setup with both hdmi and analog connections for this purpose).