In my main system I went through over 8 cables over hauls, most of the time the upgrade cost more money, the best case is paying 20% more and get a satisfactory result.
I rejected so many cables either they are not my taste or not providing positive impact in my system. Some are actually downgrade to me.
In general, you paid a lot when moving up and you might get a small to reasonable gain in sound, if such a match is made in your system.
The GE cables is the ONLY time in my cable quest that I get significant gain in tone, sound stage, and overall realism, gained by cables, AND AT THE SAME TIME COST LESS (80% less) than my previous cables.
I went back and forth, swapping out the entire loom with my previous loom and also compared with my third set of cables (which is 65% cheaper than GE) and over a month I just listen.
Most manufacturers have bold claims about their technologies. Nordost claimed that their cables are tuned to a LENGTH and should not be changed in length, yet you can custom order the cable in any length. They sounded great though, and I owned them and liked them but gawked at the bold claim.
GE cables claims are also had to swallow in the actual scientific sense. But they sound GREAT.
One of my previous loom was Cardas, and their claims of the principle of their cables needs LSD to comprehend, at least to me. But in the right system (my previous Martin Logan), it was a great match.
In short, great cables are great cables, do not be distracted by mad hypothesis and science behind it, judge them by how they sound in your system.
But I seriously hope cable manufacturers be caution of explaining the "science" and the "magic" behind their cables.
IMHO - as always

