Anything's good, as long as it's Tough Line XP. Whatever lb test is up to you. I like it cuz it doesn't stretch at all like the dacron. When you have a 15-25 lb fish take out 130 yards of line, you need something that's not gonna stretch so you can get a nice, positive hookset. If you're not careful, it can cut ya perty good, though. That's why I always wear a thin pair of gloves underneath my choppers.