Agreed. The advice here is excellent. In summary, component equipment is so much more important than cables. Not to say good cables are not important at all, as a good connection and good shielding can really help and low capacitance becomes important for long runs (studios have much longer runs than consumers). Mogami and Canare make excellent but expensive XLR cables.
Of course microphone cables are orders of magnitude more important than line-level interconnects simply because the signal level is soooo small. XLR becomes critical for microphones. And just as Blue Jeans say - if your digital cable works well (no dropouts) then there is NOTHING you can do to improve a digital signal. No such thing as a rounder 0 or a sharper 1 with digital.
Of course microphone cables are orders of magnitude more important than line-level interconnects simply because the signal level is soooo small. XLR becomes critical for microphones. And just as Blue Jeans say - if your digital cable works well (no dropouts) then there is NOTHING you can do to improve a digital signal. No such thing as a rounder 0 or a sharper 1 with digital.