http://www.fishingclub.com/fishing/nafc ... ircle-knot
A current fishing show ends with a segment called "Knot Wars". They have been strength testing various knots using braid, mono and flouro lines. Each week's winning knot moves on to the the next show. The current champ is the Homer Circle knot, easy to learn and it worked great for each type of line.
The link above should take you to a video on how-to if you are interested in learning more.
Knot Wars
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