any one using both of them.they both of them are endorsed by hewitt before. i much like the feel of vcore d,less Stiff. could any ching share their viewpt of using these2 rkts, and the strings and tension strung on the rkts? many thanks. for me,i strung rdis 93 @51lb with msv hex. vcore d@54lb with pro hurrience any opionon?