I think this question is directed to me since I currently use the Yonex VCORE 100 S. I don't have a current favorite string with the racquet but have a couple I like to rotate in and out. I stick with a full bed of poly since the racquet has a lot of power to begin with and the poly is a good balance. My current favorites are Luxilon Adrenaline, Weiss Cannon Mosquito Bite, and Kirschbaum Pro Line Evolution. I normally string my racquets right around mid tension.
Brittany, TW