I strung up weed whacker string, it's pretty tough to string as its 2mm thick. The knots don't tighten very well. But it has an extreme gear shape, so I should get some spin. I strung it at 40 lbs as a reference tension. I will do one at 50 if I feel like it.
Dunlop D-Squad Member... So I'm biased towards Dunlop.
Biomimetic Max 200G x3 and a few others...