The only good thing Fluorocarbon is good for is using as a carolina rig leader.
Because of its sucky abrasion resistance, and kinkyness(it doesn't cast smoothly) I don't use it as a main line. I have tried Berkley and Stren and don't like using it as my main line
Use Mono for your main line. It's a proven fact that mono has better abrasion resistance and cast smoother. All fluorocarbon is is horrible invisible line.