I've been readingBollettieri's Tennis Handbook. He includes a section on racquets, strings, and grips. He breaks string down into 9 catagories according to composition. 1) Solid core (polyester strings) 2) Solid Core/Single wrap 3) Solid core/ Multi wrap 4) Multifilament 5) Multi core/Single wrap 6) Multi core/Multi wrap 7) Composits 8) Aramid fiber/hybrids 9) natural gut With each he listed a few examples. For SC/MW he listed Babolat Fiberfeel, Gamma TNT Rx, and Leoina 66. Would Prince TopSpin fall into the SC/MW catagory?