What is an excellent power cable?

Some older Shunyata's (Diamondback, Copperhead) have come down in used price to new-Pangea levels.

How are wireworld, voodoo, and crystal cable? 

There are just so many. It seems daunting.

@xenon There are many, many options. But it doesn’t have to be "daunting."

I recommend borrowing two or three from your dealer or an audio buddy or from a lending program like the one offered by The Cable Company.

None of us can tell you what you will prefer and what will work for you in your system. The only way forward is to experiment and learn and come to your own conclusions. All the best.

Calvinj how are the reveal sounding to you? I have their ic, Rick is a very good guy...,

You can contact Chris @VHAudio.  He has several pre made or you can go DIY and have a high quality cable for a lot less than the designer manufactures charge.  My .02 is purchase an AirSine.  Great!! cable for the money.