I haven’t experimented much with speaker cables. I had previously biwired with two different types of older Synergetic Research cables. Mark IIS to the upper frequencies and a less expensive SR to the bass frequency. The thought being that biwired was good and put the better wires on the upper frequencies. There was a considerable distance between the upper and lower terminals on my Von Schweikert VR-4s, so a typical jumper didn't work. They are not expensive wires, but they were for me 30 years ago. Not sure now that the logic was sound, but it does make me wonder about mixing wires that excel in different areas?
I’m not biwired now. Single run of Silversmith Fidelium and the Fidelium jumpers.