Rio Valley offers some of the best values. As soon as you walk up to the front of the store, you're confronted with low prices on produce. Walking into the store, you see an array of prices and variety of different types of mexican food products. This store is mostly geared towards the hispanic community, but there are also some more traditional good options present as well. For all mexican food needs, Rio Valley has some of the best prices and quality within the Franklin Park area. Best times to go is during the week, especially on Thursdays when their new sales paper prices go into effect.