Preheat oven to 375 degrees F.
In a large mixing bowl, with an electric mixer beat together butter, sugars and vanilla until well combined. Add eggs one at a time, mixing after each addition.
Add in half the flour, along with all the baking soda and salt. Mix by hand to combine, then add remaining flour and chocolate chips.
If possible, cover and chill the dough for at least one hour, but not more than 24 hours.
When ready to bake, preheat oven to 375 degrees F. Scoop dough into rounded tablespoons and place onto an ungreased baking sheet, leaving approximately 2 inches of space between cookies. Bake for 8 to 10 minutes or until starting to turn golden brown. Remove from oven and allow to cool on baking sheets, on wire cooling racks, for two minutes. Then transfer cookies to wire cooling racks with a spatula to allow to cool completely. Store tightly covered.