I won't dismiss other reviewers' comments; however, I've had nothing but the best success with this product. Now, I can't comment on anything but the 6 Lb line for brown trout , rainbows, and brookies - perhaps other lines, for other applications, are different...who knows.
I am on the water many, many, many days throughout the year (more days fishing than not) due to my proximity to a fantastic native trout stream ( < 2 mins from my house). I've tried many, many lines; this is my go-to.line. It is more supple than floro - but just as strong and invisible. It is better than mono relative to casting and line memory. In short, it is just what an angler needs. I, for one, love it! Just my $.02