I use Trilene XL in 2 and 4 pound test for trout and river fishing and 6 and 8 pound for bass in lakes. I'll be using the same rods for muskies as I do for just about everything in saltwater (fluke, weakfish, big choppers, stripers, everything) which have 15 and 20 pound power pro on them.For ice fishing I use 20 pound ice line.I'm in it for the fihght, would rather hook into a 30 pound fish on 15 pound test and fight it for an hour than use 60 pound test and land it in 2 minutes. Anyone can land a 30 pound fish on 60 or 80 pound test, but it takes a truly skillful angler to land that same fish on 10 or 15 pound test.