Walmart may be the best place to shop..

...if you don't get a rude uneducated cashier that is. Walmart does price match. So instead of going store to store wasting gas on deals just head to your local Walmart. Be sure to bring your ads as well as a copy of the coupon policy, Walmart states that you wont need these but it always good in case they want to give you a hard time. Another thing to keep in mind is that Walmart does not double coupons as some of your local grocery stores do, so if the deal is only a deal because of the coupon doubling this week it may be worth that trip to the other store.

Know what you are allowed to do:

*You CAN use coupons on top of a price match
*Items must be exactly the same, size, product even color if must have
ad must state the price they are offering it for, if they just say Buy One Get One Free, Walmart will not price match. It must say Buy One Get One Free at $X.XX for them to honor it.
*Customer service is your friend. If your local Walmart is giving you a hard time call there customer service and customer service will call your store to educate them about there job. They will do this while you are at the store, they will not refund you money later.

Plus Walmarts already low price are great to match your coupons up with. Walmart rarely runs ads because there prices are already low - But this does not mean other stores sales cant be better.