Albert, what you did is very impressive. Unfortunately, some of us who live in apartments, condos and rented houses cannot do it. You also mentioned the difficulties that this approach may encounter.
No doubt, just saying even if a person could afford all those conditioners it probably cost more that what I did. I spent about $3800.00 for everything listed.
What I need first of all is to stabilize the power and only then think about conditioning. So I thought that something like better Furman or PurePower might work well in my modest system and do both things at the same time.
Yes, each situation is different as I posted previously. Since you cannot change what you have it makes sense to improve with add ons.
And in my experience power cords can sometimes do wonderful things, by the way.
Inna
Agreed, I've been using aftermarket AC cords for over 25 years. Many offerings today are extremely good.