P-line flouro simply the best. I have also tried the p-line halo, but I havent seen that much of a difference in the two lines. The halo is supposed to be a bit more flexible and have a little more stretch but like I said its not a noticable $5 difference. Either way, cant go wrong with P-line. Ive broken fish off on every other type of flouro except for p-line. I cant say much for the Viscious though, I havent tried it yet. I plan on trying some as soon as I get the chance though. Drew