One Cord To Rule Them All

He already has a well-made 9 awg power cable.
For $89, he could purchase a better made 7 awg power cable.
If he wants to spend a bit more, here is another 7 awg cable that should sound good powering his regenerator.
If he wants to spend more, a dedicated power line would be a good thing IME.

What's puzzling is the OP has a Power Plant P10-the top model along with a more than adequate aftermarket cable. 

Looks to me a case of reading too many audio forums/articles.

You want to get power from the wall to the regenerator over a distance of 5 feet?  And you want to push 600 watts (5A at nominal voltage).  How would you spend more than a couple of dollars doing that?  Standard household power cable does that all day long.  Nothing is going to change between the wall and the regenerator.  It is the PSA 10's job and raison d'être to eliminate line noise, waveform fluctuation and feed perfect sine wave power to your equipment.  Spending hundreds of dollars for a "cable" to bring it power makes no sense whatsoever.

Well, it looks like there are 2 camps here. One says keep what I have because before the P10 "wire is wire" and the other half thinks it all matters. Just for the record, it is a dedicated line with a SR Black power outlet. I was tempted to get the Audio Envy Mega 3, but this ongoing discussion has me undecided. I guess like all "hi-fi" there will be forever disagreements.

Well Koestner, perhaps you borrow 5 foot of fancy cable and buy 5 foot of cooker wire.  Do a listening test.

Please come back and tell us all about it.