Do good power cords have to be stiff?

Well if you want stiff, I've got two 6" wide Passion Masters by DCCA that will pass a ton of current for sale. No Viagra needed.😁

I see no issue with the Puritans as the actual amperage most of us would draw is pretty low and I think the one I have is pretty darned good. I am using Verastarrs presently and will experiment some more with the Puritan.

Look at Furutech they are pretty flexible and sound great.

@carlsbad

12G or 14G should suffice for most: 15A outlets have 14G single strand copper, whereas 20A outlets have 12G single strand copper providing power to the outlets. That’s your bottleneck: having 10G power cable feeding from a 14G wire shouldn’t do anymore that a 14G power cable.

@dekay 

I added my components to my virtual system, if that's what you mean. . . 

Audio Envy. Both the P series and the M series are very flexible and sound quite good.

Triode Wire Labs.  Pete's cables are flexible, but more importantly sound great.  Open, transparent with tremendous PRAT.