PTFE For Fuel Line - Conductive vs Non-conductive

I have not read everything in this thread, but I'm gonna assume (you know what happens then) that the difference is whether cloth wrapped ptfe, or stainless wrapped.
I had several leaks through the walls of old rubber braided line, so I've used teflon exclusively each time a leaker is replaced. I've always used stainless wrap, and had a local tubing company supply the fittings and make the line to my specifications. They aren't cheap, but I hate fuel leaks, and buying rubber lines. I think I paid about $140 for three lines and fittings, about four feet total. But that was in AZ, my source in california is cheaper, I think.