I have been furling for a couple years now (thanks to Kathy's DVD and some encouraging words at a fly fishing show). I have since been looking for the best all round material to make my leaders. I have used Uni, mono, flouro, nylon thread, polyester thread, and some materials with names I could not even read. I have seen advantages and disadvantages of the many materials I have tried, but last summer I started using Fireline Crystal and I do not think I will be furling anything else for a floating leader. I love the duribility, the way it turns over a wide variety of flies (dry and wet) and it floats forever. I have yet to see anybody talk about using this material, so, I was wondering ......I am the first one to use Fireline Crystal (which I doubt)? If you have had experiences with Fireline Crystal, I would certainly like to hear them.