I was a die hard trileen guy for decades.Then I discovered Izorline. I have to say this stuff is great. I always recommend this to the floro guys, best of both worlds and a whole lot cheaper. I just started using the 6# on my spinning rods and it is fantastic. Tested it with a scale and it breaks at a little over eight pounds. I have not lost one fish due to it breaking. Good stuff guys, give it a try.