Fluoro isn't just for sensitivy. It is the most abrasion resistant and if you slow roll spinnerbaits in rip rap like myself, you will need that quality. Fluoro also has great breaking strength to diameter ratio. I like to use Sunline Super Fluorocarbon and FC Sniper. I use it in 16lb test for everything except flipping, jerkbaits, and topwater. I step up to 20lb test for flip, pitch, and punch. I use mono or copoly for jerkbaits and topwater. But I have fluorocarbon on every setup except one.