Dude, I hope you're typing this stuff in from a cell phone or something
As far as performance, TosLink and digital coax are the same. I prefer digital coax because TosLink doesn't always make a secure connection. Also you can use a spare composite cable (yellow RCA) as a digital coax cable.
You could also use 75 Ohm coax...which, in these fora, can be called composite cable, component cable, 'digital' audio cable, SDI cable, RF cable...it's all 75 Ohm coax, and no, there is no such thing as a digital cable.
No one has ever proven (to me) that optical is better or worse than coax. Optical does have the advantage of not being subject to RF.
Optical is full of jitter though. And removing all that jitter is hard without an electron microscope and a very small tweezers - j/k, no one has ever proven (to me) that optical has any more or less jitter.
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