That is a good point. I was once told by an electrical engineer who is also an audiophile, that he felt that the best upgrade path for the Neotech AC cables was to change the ends. He felt, and I do the same, that the internal construction of the Neotech cables were solid performers without altering the AC paths, but the connectors did influence, to a degree the perceieved sound and quality.
Alll I can say is, based on my experience, costs do not mean a thing when it comes to cables and syngergy, trial and error, and lots of time, more so. There is no magic fix, just reasonable listening and comparing of ones listening traits to get to that point where someone can say this is it. There is a relationship of price to quality and packaging, but again, that does not mean it is the best fit to someones system, yeah, we all know that already, that is why we are here.(Something stated from the movie, Matrix).
Your system is pretty impressive and looks nice, I bet you have done a lot of cable comparisons on your way to nirvana.
Ciao,
Audioquest4life