Lakota, I would say that artifcial sinew, waxed nylon would be the worst!
I use the strongest material, like Fast Flight or other High performance materials.
I do like John, and twist the entire length. One long string to use for different bows.
I want the the limbs to show everything, and not the string stretching!
I may disagree with folks about certain things, but learn from everyone, no matter from the most experience and the greenhorns, on the light they shed!
I don't have the best of eye when tillering, but I'm learning!