Beat butter and sugars at medium speed with an electric mixer until creamy. Add eggs and vanilla, beating until blended.
Combine flour, soda, and salt in a small bowl; gradually add to butter mixture, beating well. Stir in morsels. Drop by tablespoonfuls onto lightly greased baking sheets.
Bake at 350° for 8 to 14 minutes or until desired degree of doneness. Remove to wire racks to cool completely.
Note: For testing purposes only, we used Hershey's Special Dark Chips.