Henry: I've never heard of an endless loop ff string, and am pretty sure I've never had one under a different name, but that is not the FFF you posted they were going to stop making.All endless loop strings have served loops. All Flemish have woven loops. Fast Flight is the type material they are made from. Fast Flight material is the least forgiving in the event of a dry fire, be it endless loop or Flemish. The FFF would have at least some stretch due to the woven end loops. I can see where an endless loop type out of that material would be a problem.