In large mixing bowl, combine sugars, butter, shortening, eggs and vanilla. Using an electric mixer on medium speed, beat until creamed.
Reduce mixer to low; slowly add flour, baking soda and salt until well combined.
Stir in chocolate chips; drop dough by teaspoonfuls onto ungreased baking sheet.
Bake in a preheated 375°F oven 9-11 minutes or until golden brown. Cool on baking sheet 2 minutes; remove to wire rack to cool completely.