I see the topic of discussion on this thread is dealing with balanced cables at the moment so forgive me if I take a slight detour from that. However the OP asked about cables in general, and requested to hear "voices of experience and sanity", so here are my two pennies.
It is my opinion that the community is greatly mistaken about cables. While I firmly believe that different cables sound differently from one another, I am equally convinced that audiophiles are wrong about what the cables are actually doing in a system. For example, in the amplifier/speaker relationship, if you really want to hear what your amplifier sounds like, your speaker cable should be exactly the same wire that is inside of your amp going to its binding posts. Right? All these high end cables we put as the interface between amp and speaker that give us tremendous air and expansive soundstage, etc., are all DOING SOMETHING to the signal to give us the ILLUSION of air and expansive soundstage. Anyone who believes that expensive cables are unlocking something magical from your amplifier is a fool. You can't get something from nothing. If you have some generic wire inside your amplifier and speaker, insert a $4,000 speaker cable between them and VOILA! Now you have successfully unlocked the amplifier's full potential. Or, my favorite, "found a cable that gets out of the way of the music". Give me a break.
So just to recap: Yes, I believe different cables sound differently from on another, but it's because they are manipulating the signal to give you the illusion of more this or that. They DO NOT unlock your amplifier's greatness. If you truly want to know what your amp sounds like, use the same wire inside your amp as speaker cable.
This is what makes most sense to me.
It is my opinion that the community is greatly mistaken about cables. While I firmly believe that different cables sound differently from one another, I am equally convinced that audiophiles are wrong about what the cables are actually doing in a system. For example, in the amplifier/speaker relationship, if you really want to hear what your amplifier sounds like, your speaker cable should be exactly the same wire that is inside of your amp going to its binding posts. Right? All these high end cables we put as the interface between amp and speaker that give us tremendous air and expansive soundstage, etc., are all DOING SOMETHING to the signal to give us the ILLUSION of air and expansive soundstage. Anyone who believes that expensive cables are unlocking something magical from your amplifier is a fool. You can't get something from nothing. If you have some generic wire inside your amplifier and speaker, insert a $4,000 speaker cable between them and VOILA! Now you have successfully unlocked the amplifier's full potential. Or, my favorite, "found a cable that gets out of the way of the music". Give me a break.
So just to recap: Yes, I believe different cables sound differently from on another, but it's because they are manipulating the signal to give you the illusion of more this or that. They DO NOT unlock your amplifier's greatness. If you truly want to know what your amp sounds like, use the same wire inside your amp as speaker cable.
This is what makes most sense to me.