For several years I tied my own tapered leaders, the Maxima Ultragreen and Chameleon are good materials. For a starting point, you can copy the Orvis tapered leader formulas here :
http://www.finefishing.com/equipment...ifications.htm
There are many other tables that people have published on the internet. Now I use furled leaders almost exclusively. Tying your own leaders is a money saving effort, I would go through $100 in leaders a year.