I just tried the 12# test out yesterday, fished a 1/8 oz grub most of the day and so far I really am impressed. No problem with the double polmar (nanofil)knot,little if any line memory,great sensitivity, no spooling problems that some say they experienced. Fished most of the day in stiff wind and had zero wind knots. Was using light spinning tackle, but casting distance was not as impressive as I expected. The only thing I was concerned about was the white color of the line and unlike braid it wouldn't darken with magic marker.
It was only my initial experience and it was pretty limited. I will of course learn more as I keep fishing it, but I will keep using it and am glad I tried it out.