Hi Bill - for the most part, with Aurender, the AES/EBU should give you better performance. If in doubt, try borrowing one from The Cable Company and determine for yourself.
Input output cable question
I have the Aurender N10 and a DAC that support the AES/EBU 110 ohm cable.
I am using the 75 ohm coax connection.
Is there a sound quality difference between them?