Shucky darn, i have 2 each of both! The fff and the excel seems to be about 12 to 15 fps between them. Evidently if Excal isn't going to carry the fff strings, i will use mine until they wear out. Then just use the excel strings. Exocet how sweet it is. Ain't seen any deers fer 2 weeks now. 5 days left boohoo! I am tired after 3 months i need some rest!