My Best Biscuits

Name: My Best Biscuits
Ingredients: 1-1/2 cups a/p flour; 1/2 cup 'white' whole wheat flour; 1 tablespoon baking powder; 1/4 teaspoon baking soda; 3/4 teaspoon salt; 6 tablespoons butter, very cold, cut in 1/4 pieces; 1/2 cup milk, very cold; 1/4 cup plain yogurt or sour cream, very cold; 1-2 teaspoons honey; few tablespoons milk for brushing on tops