In a small bowl, combine the wafer crumbs and butter. Press onto the bottom and 1-1/2 in. up the sides of greased 9-in. springform pan; set aside. , In a large bowl, beat cream cheese and sugar until smooth. Beat in cream and vanilla. Add eggs; beat on low speed just until combined. Fold in chopped candy bars. Pour into crust. Place pan on a baking sheet. , Bake at 325° for 60-70 minutes or until the center is almost set. Cool on a wire rack for 10 minutes. Carefully run a knife around edge of pan to loosen; cool 1 hour longer. Refrigerate overnight. , Sprinkle chopped candy bar over cheesecake; drizzle with butterscotch topping. Refrigerate leftovers.