SPH: My Danny Miller catalog list 4 strings. Endless dacron, Endless Excel, Flemish Twist Dacron, Flemish Twist Dyna Flight. 1st two are $9 2nd two are $10. I think the last one listed is FFF, but I KNOW the one we've been talkin about as better than FFF is the EXCEL. My FFF have grey and black strings, Excel has green and brown, and I got a third one that has green and black, but it even looks slow in the package, LOL. Actually, it looks like dyed bailing twine. Gonna use it for a choker collar for my dog. The difference in poi at 20 going from fff to excel is four cliks up on scope elevation. And that's on both of my bows. I think you'll like the excel once you try it.