Over the part 10 years, I have not strayed away from the typical old dacron line for mainsheets and jibsheets. For downhauls and outhauls I switch to kevlar lines a few years ago.

Does anyone have any information on higher performance main/jib sheets? What do you like and dislike about some of the newer materials (Yale Light, Sampson WarpSpeed...etc). I know a lot of sailors that have switched to 3/8" Yale on their mailsheets. I have heard good and bad.