@bigtwin I think you've arrived at a beautiful place to be: contentment. That doesn't require a rationale and it doesn't require you to change anything, which generally means you aren't required to spend money to stay put in happy town. Big win!
I try to stay there myself, and often succeed for months or even a year or two at a time, but every now and then a well-meaning friend opens my ears to the possibility of more. Some things result in small improvements, some large. Some none. Some of these come at great cost, some small.
Case in point, I tried a couple of Anas' v1 Gamma Infinity power cables and loved them. I tried some of his v1 Gamma Infinity signal cables and they pushed my system in a direction I really didn't enjoy, so after giving them a few weeks to see if my opinion or their presentation would change, I wound up returning them. Anas refunded my money promptly (after I shipped them back).
So, while I can't say I've ever heard his cables make no difference at all, I can say his past cables weren't always the right match for my tastes in my system.