Hey there JP,

I've just completed the bare bones of an article I'm doing on today's Super Lines. All Fluorocarbon lines are not equal. The biggest difference between the brands is that some are 'pure' fluorocarbon while others are a co-polymer with varying degrees of fluorocarbon blending and or coating.

I think the main reason people want to use what fluorocarbons claim to offer is because they want to use the heaviest test line possible, while still meeting the low visibility criteria of much lighter lines.

Many fluorocarbons makers claim their advantages are: 1) abrasion resistance, 2) low-stretch, 3) low visibility, 4) less UV damage, 5) low-memory. Again, some of it's relative. Heck, the way you fish it (top shot, leader, stubby) has a bearing on if it gives you the advantages you want. One thing for sure, most fluorocarbons have a larger average diameter than other types of line. This can translate into lower line capacity (some baitcasting reel spools are really small), often has a higher specific gravity (it floats more, especially in saltwater)and, has a higher resistance in the water. (get dragged around in the currents easier) There are exceptions.

I've used Vanish and like the feel of the line. It's demonstrated the attributes mentioned above. I use 4lb for surf fishing grubs.

Some answers:
It does make a difference.

It depends. Some monos have special coatings that have superior durability to those of fluorocarbon and vice versa.

Leader length is just a matter of conditions.

Check out some of the websites that discuss the pro's and con's of different types of lines. There's a big fight between Seaguar and Berkley on line quality.

Hope someone has more real-world input for you.

tsurikichi
a.k.a.JapanRon