Power cable from wall socket to power strip

I have found that my sound is best from my superior cables being plugged into my components. I tried my best cable from the wall to distributor, but it did not work well. Currently, my wall to distributor is serviced by an adequate, but unspectacular cable. I think it would be good to upgrade the wall to distributor cable, but I am not certain if I would notice a large improvement. A little improvement would be nice, but I wouldn't expect anything dramatic at this point.

Go to the Nordost website. They have a presentation explaining what they believe is the order of importance of each cable in a system. 

Of course they do. It's called marketing. They are VERY good at it.

But the meaning with a power conditioner is to "clean the power". Right?
So how can the power cable to the conditioner matter? Or am I just stupid here?

No, you are not stupid, just logical. Why would a manufacturer not build a high quality conditioner with a high quality power cable that was matched and hardwired to the unit? No upsell opportunities. 

The Puritan Audio Labs Power Conditioner PSM156 comes with a good Puritan Classic power cord supplied in the box, BUT, almost every PSM156 we sell leaves with the Puritan Ultimate Power cable. It makes a very solid upgrade even better.

@macg19 

Of course they do. It's called marketing. They are VERY good at it.

How is it that SO many people don't grasp that? Are humans really that gullible?