Preheat oven to 375 F degrees. Beat butter, shortening and sugars together until light and fluffy (about 2-3 minutes). Mix in eggs and vanilla. Add flour, salt and soda until combined then stir in chocolate chips (and optional nuts) by hand until mixed together. Use a #50 standard scooper to form into balls and place on ungreased cookie sheet. Bake for 8-10 minutes until golden brown.