Well, I believe that I am beginning to hit just a little too hard to keep using just multifilament strings. So, I am looking for polyester strings that last longer than most others and also maybe add a little pop rather than just completely deaden the string bed, as I am not a 5.0 player that always hits hard. When I do hit hard, I need it to be more controlled. So what I am asking for is a user-friendly poly, if there is anything like that. Thanks.