I like Trilene Big Game for mainline because of the low memory and less line twists and coils. For leader its got to be Izorline. Ive been using Izor and Max UG almost exclusively for leader material and love both.
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"I have a fair idea of what to expect from the river, and usually, because I fish it that way, the river gives me approximately what I expect of it. But sooner or later something always comes up to change the set of my ways..."
- Roderick Haig-Brown