Which main power cord?

"Does anyone have experience with each of these cables?"

No, but for your application one of these should be a very good choice. ESP, Richard Grey, furutech.

It would be best to use same brand of power cable as power conditioner.

It would be best to use same brand of power cable as power conditioner.

Nonsense! There are many great products out there from various brands that integrate far better than those all from the same brand. Take advantage of the opportunity to buy used power cords here, try them out in your system and then resell them here once you find the one that works best for you.

We speak from experience.

This is just a heavily biased personal value judgement .
In many high-end systems, both the manufacturer and dealer expressly recommend bi-passing any power conditioner and plug directly into into the wall plug on a dedicated power line for maximum performance .

If you have to use a PC because of wild power swings in say, an old apartment, then matching it to the PC pore cable seems best IMO, simply because anything up from the PC cord is a mismatch / waste anyway because of the filtering effect of the PC and its power cord.

If you can bypass the PC, then I totally agree with JAFOX to tailor the power chord to your system: the amp one may -- and frequently will be -- very different from the source power cable.

There is NO substitute for an actual test drive in your system. I went through about six recommendations (dealer loaners, amigo loaners ) before settling on the two power cables , and yes.... They are VERY different.

Two of the six contestants sounded like crap in my system, but performed great in my buddy's system.

System synergy matters ... Big time.