I use a bunch of flouro fishing Laurel so much as it's so clear. I only use the improved clinch or the trilene knot (no reason which one, they both work fine, just depends on my mood I suppose)

One thing I've found though on flouro, plenty of lube (in the form of good ole spit) makes it MUCH stronger (the knot) and takes the heat out of the cinching of the knot....