Keep an open mind
Don't be afraid to try a new product or a different brand. We can often get stuck in a rut, buying the same products over and over. Add some variety to your rotation by branching out with new flavors and varieties. If there's a taste or smell you can't live without, try looking at the "on sale" brands with similar ingredients.
A big advantage to being loyal to coupons rather than brands is the opportunity to try the newest products. When manufacturers launch a new item, they often advertise with a high-value coupon for you to try it out!
When there just aren't coupons for what you need (such as cream soups in the middle of summer or BBQ sauce in the winter), feel free to try the store brand or the generic to tide you over until the next sale cycle. Many times generics are manufactured by the same company as the name brand or taste similar (or better!) than their counterparts.