Lundy and Steelhauler suggested I try the Fireline from Berkley. I have to say I really like it! I tied 125 yards (a whole spool, 12 bucks ) of "10-4 smoke" (10 lb. test line with a diameter of 4lb. test mono in a dark gray color) onto each of the 6'6" med. action rods I bought recently. So I had to spend 25 bucks to line both rods. But they say it lasts a long time. What I liked: the color was very neutral and low-vis. The line was very thin for its rated strength. The line handled well as far as tying knots. The palomar knot that you need for this line is so much easier to tie than the old trilene knot i used to use. (I just learned how to tie the palomar knot.) I like the way this line doesnt want to curl and holds its shape if you double it up, etc. The line was very smooth casting. Its very "slick" line. It almost acts like it has a teflon coating or something. The line is very sensitive. I could really feel my vibee. I could tell if a treble was flipped over (a "half-strength" pulse instead of a full pulse) What i didnt like: the price. (ill get over it!) At 12 bucks for 125 yards the line is about 6 times as expensive as regular trilene xl. (5 bucks for 330 yards) I should say that I only used it once, in 10-15' of water jigging for walleyes. I cant wait to try it in deeper water for some perch. I imagine it WILL be good for detecting light bites as was suggested.