Budget High Current Power Cords

GR Research power cables. Really nice and cost around $375 depending on length. 

I use ice age audio 10awg for amp and 12 for preamp.

Take a look at vhaudio.com.  They sell premade cords and Chris has a Diy page to make your own where you save alot.
I made 2 Flavor 4 power cords and others.  His plugs are really nice but too pricey for me.  I order  Viborg solid copper with gold plating plugs on amazon and i couldn’t be happier. 

Look at Synergistic Research.  They make high quality products.  Ask for Jason Ressler when you call.  He is extremely knowledgeable and honest.  Tell him Larry from Denver sent you.  You will really talking to him.  One of the most knowledgeable in the industry.

Such a trove of valuable leads, thanks to all. Can't guess how any particular cords will sound in my own (ever-evolving) system, but I feel sure the worthiest contenders have all been named, many of them dittoed. So I'm starting with Zavfino (thx to lalitk & williewonka) with the other thirty candidates standing ready in the playlist. After all, it's more about the journey than the illusory destination, right?