Power Cable DIY - Please advise

Per my post above, my apologies as I spoke about speaker cable.  So let me respond more cogently. I have a have dozen power cords and new heard a damn bit of difference between the lot of them. Until recently.  I got a Shunyata Venom 3 PC and, oh boy, the difference was clearly evident!  Much more detail to the sound and the increase in clarity was very noticeable.  It is one of the best tweaks I have found for $120 from Steve at The Cable Company.  Clear Day has an excellent PC for $100 as well, but I definitely prefer the Shunyata PC.  

I have runs for Neotech NES 5001, Mogami 3103, and recently Van Damme HIFI Series Studio Grade Speaker Cable 2 X 6.0mm that I rotate through my system.  Supra Classic speaker cable is excellent.  All audiophile-grade cables and quite inexpensive.  I have recently been terminating my speaker cables with AQ Suregrip 100 BFA connectors and they are excellent.  Dyson makes from very fine and inexpensive BFA speaker cable connectors that I will be trying soon. 

I have tried 10ga silver-coated copper cable and found it decidedly bright in my system, but evidently others like it.  Horses for courses...