I use William Tell Zero and it is fabulous. That said, if you choose the single wire and jumper path, using William Tell Zero, Audioquest also sells high-quality jumpers that you can buy either as silver or copper wire. The terminations are your choice of either spade or banana. They are 8" in length. Both of these jumpers use the 500 series of terminations. The Audioquest website will show you all of these products.
Best to you.