I'm sold on the Nanofil for spinning gear, and it's a good thing because it is expensive as all get out. It's all I have used for the past year on my ultralight jig rods (6lb.). I now have it on my bass jigging rod (14lb.) It holds up over time with very little twist, like a previous writer said, it casts a mile. What I like most is tht I can trust it to hold up all day without wind knotting and forcing me to put on a new spool. I agree that you should use some backing. If for no other reason than to hold down the cost of using this line. Smaller reels also help in this respect.