This is what I use. My buddy uses siglon F and my mono, with this stuff on it, out mends it. I swear the mono obsorbs it after a while and you rarely have to put it on as much. My mainline I've had on since the begining of june and has turned grey from the stuff. But the line is in ship shape, mends like a champ, and maintains a much better presentation then thread line. It's a little clear for thread line right now anyways (in some places).