Another important thing. With this you can't find a way that suits you best and stick with it. You should be able to play alternate, economy and legato (pull-offs and hammer-ons). Different situations require different technique.
For example, I was showing the fast part of "Zorba the Greek" to a friend, who insisted on playing it economy picked, because he's mainly jazzy and used to it. The part, however, clearly calls for strict alternate picking because it's all 16ths, so its always more accurate than economy picking. I also believe that the original is played on bozouki with alternate. This is how I choose what to use.