there is a section called, "the complete player" in the latest tennis magazine. this section shows several of the top players' racquet and strings they use. i noticed 16 gauge string was by far the most popular. i figured since they probably get their strings for free, they would choose 17 or 18 gauge for playability over the 16 gauge for durability; but it doesn't appear so. i wouldn't think they care for durability when they have their racquets restrung before every match and have 9 racquets in the bag. maybe 17 gauge doesn't really offer better playability over 16 gauge? anyone know why 16 gauge is the most common? and what gauge do you use?