Which line is better -- fluorocarbon or monofilament?

Easy & Effective Knots for Multiple Wires - In-Fisherman

Mono and Fluoro Line – Reaction Tackle

Reaction Tackle High Performance Fluorocarbon Coated Fishing Line 350yds-Unmatched Strength-Low Visibility- Abrasion Resistant- Mono Upgrade

Reaction Tackle Fluorocarbon Coated Fishing Line

Best Fluorocarbon Lines For Catching More Fish

5 Best Fishing Leader Lines - Fluorocarbon vs. Monofilament - BC

Defiant Soft Casting 100% Fluorocarbon Line

Clear Fishing Wire,755FT Monofilament Fishing Line

Best Fishing Line for Surf Fishing & Bait Rigs - Florida Sportsman

The Difference Between Monofilament & Fluorocarbon Fishing Line