If you are using a slip sinker with a long leader the line style with the bead is best because it will be able to cast through the eyes. This way you can have 13ft below your float if needed while reeling in your line to only 3 or 4ft for casting. I go for the ones with the thinnest line for the best casting ability. If the amount below your float is less than the length of your rod than a fixed float would make more sense.