I've had pretty good experience with Enduro Pro 18ga. - now it's changed to Enduro Tour. I liked the firm feel and tension maintenance was pretty good - better than average anyway. So, I just strung it up for the first time and it almost felt like multifiliment. I had to double or triple pull just about every string to keep the stringer from bottoming out. I don't have a real good feeling about tension maintenance with this new string -- but we'll see. Has anyone else played with it? I typically string polys at 54 pounds on both mains and crosses.