@overthemoon I tend to agree, and much earlier in this thread suggested that the last cable added was the most important because you had taken care of issues elsewhere and now you were more fully experiencing and expressing the benefits of the next addition. I got called out at the time for being somewhat naive as each cable has it’s own function in a system and therefore can only have so much effect.
My answer to this criticism many years later, having a better system, a much, much better room, and much more experience tweaking, is “whatever”. It all matters, and matters in different ways depending on what specific “problems” you are trying to address to preserve and keep signals in their lanes in your room and set up. I generally agree with the original premise that power cables make the biggest difference, and have now assembled and used many from different bulk cable and connectors, and have also used many PCs built by others. What I find is that different cables can make both revelatory and frustrating levels of difference depending on the system and application with different equipment models and types. But in the end, the effort is definitely worth it.
I am also blown away with the difference digital cables make. I just swapped a USB cable from a SSD to my streamer and was gobsmacked.
YMMV
kn