I usually end up coming to Sweet Tomatoes with my family after traveling to Phoenix and no one feels like cooking. They have a decent buffet and it is reasonably priced. Very fresh ingredients, and hot food as well like soups, pasta and pizza. They also have a dessert bar and wide selection of beverages.
Sweet Tomatoes is more family-oriented and attracts thw Snow Bird crowd, but never seems to be overly hectic with kids running wild. It's a good place to come for a quick, cheap and healthy dinner.