Years ago, when fancy power cables started popping up, folks agreed it was lunacy. Now, you have people arguing it's THE most important cable in a system. It's a pretty good example of what marketing can do.
I'd be interested in knowing if anyone has tried a fancy audiophile power cable with something other than an audio component. Ironically, those connectors (particularly the IEC end) are way too big to fit most other electronics. I figure if there is a difference to be observed, it would manifest itself in something other than audio. I have a handful of different fancy power cords and I, so far haven't been able to find any concrete evidence they're doing much at all.
I connected various cables to PC monitors and laptops. The logic being that both had screens, and under certain conditions, you can see various imperfections in the displays, even among new PC equipment. Viewing various AC cables connected to identical devices side by side, the only differences were in the monitor, or laptops themselves (that is, if I switched the cable, the same anomolies would stay with the respective device).
BTW, a lot of high-end (gaming?) latops have AC adapters with IEC connectors, and an you can squeeze some of the fancy IEC connectors into an HP ZDisplay. So, it's possible to experiment.
I'm interested in know if anyone else has found another device the not only fit, but would perhaps allow for observable comparisons.