Tractor Supply, and other farm supply stores, will have a nice variety of quality dog foods.
The farm co-op that I drive past every day has Taste of the Wild (my current choice,) Chicken Soup and Canidae and some other better brands that I have not tried. I've never understood why they carry better brands than the pet stores (including Petco and Pet Smart.)
In a pinch, I'll feed Purina One Lamb and Rice but, if I feed it long term, Molly gets a chronically dry coat. The Costco we go to is about 70 miles each way, but I would stock up on Kirklands if I decided I couldn't afford the TOTW.