Best power cord for a preamp?

Just your comments - of your experiences, with separate components - are much appreciated :)

Reply's so far seem questioning; similar to salesman trying to determine what I want to buy? I'm hoping to learn - and possibly discuss what's new and exciting in power delivery. Marketing 'lingo' is just so extreme that it's somewhat annoying. For example "QR/BB'  'technology.  Near as I can figure an effort to hide the fact it's a capacitor on the line. Not really that new or exciting :)  But- capacitors are effective.

Borrow from the cable co. Sometimes you have to spend money to get what you like.

Look at this:

Furutech project V1 
https://www.whatsbestforum.com/threads/furutech-project-v1.34714/page-2

buy anything that is OCC single Crystal copper or silver that is the best wire for audio and it has been proven for over 50 years to be so, far superior to anything ofc on the market.