WowI've used Vicious for about two seasons now with great results. Never had a break-off yet (knock on wood), tough line, and great price. I've caught tons of bass and huge channel cats with it without any problems.
Heck, I've heard so much praises of the Trilene 100% that I decided to give it a shot this year and I cannot explain how disappointed I am with it. I took that junk off, spooled the Vicious line back on and never had a problem since.
I don't know what to say, everybody's experiences are different, but in my experience with this lineI had great results and will continue to buy it until I run into these problems many of you here have experienced.