I'm gonna throw this in because I use tapered leaders and hate spending money on them.
Find fairplay leaders, I shop at walmart for them... $1.96, and usually get tipped off at 5 or 6x
Right out of the package, I add 3 feet of 6x, making my leader an ideal 10.5-11 feet (with 6 inches of heavy mono at the end of fly line for an easy loop to loop) This should last you at least 10 fly changes. As you get down to 15 inches of your original tied on tippet material, add another 2.5 feet of 6x to that.
After this, I clip off the original tippet extension, and redo the process. In a nut shell, a leader lasts me at least a week, and I luckily fish daily.
Upon doing this so many times the leader inevitably gets too thick to tie on even 4x, so, I bought a spool of 0 and 2x mono. If I am in dire need of a leader (usually carry these for spares) I throw 1.5 feet of each on, and then go down to my 5 or 6x. Building leaders just isn't my style, though all my friends do it.
I fished w. a buddy who uses furled over the weekend, and he has me twiddling my thumbs and indecisive. They seem to have a lot of advantages, not to mention making casting that much easier. Hope this helps, and I didn't waste your time