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I should mention I use mainly 2x and 3x leaders/tippet on my 5wt and 6wt rods, and 1x and 0x leaders/tippet on my 7wt and 8wt rods.

Smallies are strong, without a doubt. Bluegills too, for their size. Don't discount white bass and wipers either! Oh, and while we're at it, catfish and carp are mighty powerful as well.
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