My buddy got 8 sets of this stuff for free thru a Volkl racquet deal, but now he's down to his last set. It's a nice, $14 multi string, and he's used to it, but doesn't like the way it moves all over the stringbed, even at 60 lbs. What would be a similar multi string without much movement? X-1 Biphase? Multifeel? (He doesn't like my muted-feeling Rip Control, but I do.) Thanks in advance.