You need to have an idea what you would want to try first...you will get MANY different opinions of what is best to use to catch Crappie!

The many options include cheap OLDER styles of Mono, Fluorocarbon, or Braid/Superlines.
Mid-Priced NEWER styles of Mono, Fluoro, or Braid.
And NEW higher priced styles of Mono, Fluoro, or Braid.

I prefer Seaguar Smackdown Tourney Braid...I feel for the way I fish that it has ZERO drawbacks and all the benefits.