HAVE CABLES EVER TAKEN YOUR SYSTEM FROM SOUNDING JUST OK TO SOUNDING GREAT? Experiences ?

I did a full loom of expensive cables….when back and forth with the Blue Jean cables I had…sent the expensive cables back saved thousands of dollars…the difference was hardly noticeable….

@phd the approach we take is that the should just get out of the way.  Should should have the sound of your amp and source and speakers. Cables should not be a bottle neck is the approach we take 

I have tested several different cables in my system and noticed subtle changes. It's nothing dramatic, but it's noticeable to me. I'm no engineer or scientist, and many knowledgeable people on this forum can explain why cables do or don't sound different. The only thing no one knows better than me is what sounds good to me. 

"The reason tonearm cables actually make a big difference is because they are handling very low voltage signals, and thus are very susceptible to interference and LCR effects."

Are not all cables subject to the same type of distortion albeit at different scales? Which begs the question - what is done to different TT cartridge cable wires to make some more desirable than others?

@rpeluso - First post on this subject I have seen that I can agree with...all I will add to this discussion is that replacing an obviously bad cable (open or shorted) with one that functions as designed is all the difference I can hear. I have replaced cheap flimsy molded cables that came with a new piece with significantly better made cables and could discern no difference in the sound quality. That said the better made cables fit better, are more physically secure and look better, but sonically, no different. I can think of much better places to put 500-5000 dollars than on a set of fancy cables.