what's in your (leader) wallet?

[C&R]

We often talk a lot about imitating specific fly patterns. We also know that presentation is very crucial in catching trout. Casting like a pro is neat to look at but has less of an impact than the fly and how it is presented on the water. But what about that "fine line" (pun intended) that connects the two together?

Yup, leader and tippet...what's in your wallet?

So the topic today is...what is favorite brand/type of leader AND tippet for TROUT. You may include braided and self-made leaders. You can list multiple types for different water types/conditions or different fly patterns.