Beat sugars, margarine, shortening, eggs, vanilla and vinegar until creamy. Don't over mix.
Combine baking soda, salt and flour and add to creamed mixture. Stir in chocolate chips.
Form into balls using medium size cookie scoop and drop onto cookie sheet. Bake for 10-12 minutes until done but not brown.
Cool and enjoy.
NOTE: The trick is to not cook them too much. They are better when they are chewy. Take them out of the oven before they brown.