Kalali,
I have compared the two outputs. In my system, the optical output was the winner. I use the new Wireworld Super Nova 7 optical cable. Has over 300 glass fibre strands. This was a vast improvement over thick plastic cable toslink. The coax I compared it to was from Canare, called DigiFlex Gold. An older design of cable but was highly rated at the time.
I have compared the two outputs. In my system, the optical output was the winner. I use the new Wireworld Super Nova 7 optical cable. Has over 300 glass fibre strands. This was a vast improvement over thick plastic cable toslink. The coax I compared it to was from Canare, called DigiFlex Gold. An older design of cable but was highly rated at the time.