Which of these power cords ?

Why not contact the Cable company to try a few power cables and decide for yourself. They charge you 5% plus shipping. If you purchase anything from them your 5% is applied to the purchase.

I also decided to dip my toes into the aftermarket power cord market and needed a large number of cords.  Not knowing what to expect in general I didn't want to spend too much.  At the suggestion of an Audiogon member I purchased these low cost cables at $50 per 6 foot cord.  They certainly SEEM well made (in China).
https://www.amazon.com/WAudio-Hi-End-Audio-Power-Cable/dp/B01L2UNMXI/ref=sr_1_6?keywords=audio+power...

These are my first venture into power cords and they make a positive difference in my system.

It is my understanding that you would generally use a different gauge wire for power amps than for your digital gear.  If you go with more expensive cables this can make a fairly large cost difference as the higher gauge (thinner) cables generally are less expensive.

@cdc2, 

PM sent.

don't overlook the lower cost Transparent Audio power cords...a big upgrade over most stock cords...