I'm selling on all the Fluorocarbon applications here. Sounds to me, these guys are FC lovers, as they have pretty much said FC for where ever they don't need floating lines. The line diameters are overkill too. I can't think of too many situations you'd need more than 17# mono or 65# braid. Also, there was ZERO discussion of utilizing line as a part of the "system." As in rod, reel, line, terminal components, and bait. You can't just say, "You must use 8# mono for hard jerkbaits." Spinning/casting, rod power and action, cover, water clarity, other species present, etc. all come into play.