Commercial tapered, compound (homemade), or braided? And for what type of fly fishing?
I tie mine from regular mono, tapered from about 25# test down to 5x for trout, or 1x for bass. Usually takes about 5 different diameters of mono, connected with blood knots, to get a good taper and solid knots. I've never tried braided/furled. I used to use the commercial leaders but they are so expensive, plus it never took long before I was adding to them anyway.