Upgrading to JWM 10 vs Audio Quest PT9

Hi Folks, I am uncertain weather to upgrade to a JWM 10. I am using a VPI HW 19 Mark IV with all the possible upgrade to it. Its current arm is an early Audio Quest PT9 with internal silver wire. New Cartridge will be Ortofon Kontrapunkt b. Will the upgrade make a significant audible upgrade worth the 1200$? THanks, Enrique