Never heard of it. WF (wgtfwdfloating) is a good choice. I put on line one wgt heavier than the rod is rated for, makes easier casting. I purchase all my line for 9.50, 2nds from DiscountFishingTackleInc. Denver, Co. Have used their lines for years, 30-50 dollar line, but 2nds at 9.50. Excellent line and at that price I can change line every year if I wish. Can't beat the deal.