A couple of other posters beat me to BEANS! However, one of them made a mistake on the calories thing. They compared 11 oz of chicken to approx 40 oz of beans on the calories. That worked out to 530 cal in chicken vs 1850 in that amount of beans. An actual meal portion of beans is about a cup--8 oz. There are about 5 portions in that 39.7 oz can. If you divide that by 5 you get the real portion calorie count. That works out to 370 cal per portion, meaning also, that the big can is a good $ buy, as it has 5 portions in it. If you prefer a more generous portion, let us assume 4 per big can. That still gives a nice cal count of 462.5. The chicken portion in the example was also oversized. Usually the portion cal count in meat is based on a 4, but sometimes 5 or 6 oz size. Let's be generous and figure on a 5 1/2 oz size--2 portions of chick out of the 11 oz pack. That would give a cal count of 265 per portion. While it's still better than the count for the realistic sized portion of beans, it is not necessary for every meal to be the same count. Also, beans are low in cholesterol and fat, and high in fiber and protein. Calories are not the only important factor in choosing what to eat. The food qualities of a food are also important. Some foods that are a little higher in calories are still a good option if they bring some other good qualities to the plate, and that includes beans. Unfortunately, to me they taste awful, but I can get them down with BBQ sauce on. Because they don't need to be refridgerated until cold, and are economical, and have good food qualities, I do buy and eat them. I also keep BBQ sauce on hand to get them down.
Don't worry so much about the cal count of individual foods, though. It's more important to eat healthier in general, without obsessing about every single calorie. That will only add stress to your meal times, and that will give you indigestion.
Forget the cal counting. Just put healthy foods on your plate. In no special order:
- Beans, whole grains, nuts, tofu, nut & grain milks (soy, almond, peanut, oat, rice).
- Lean meats, and fish.
- Dairy--milk (2% fat or less), eggs, low fat cheeses.
- Fruits & Veggies.
- Low fat oils, low fat salad dressings, low fat mayo, low fat sauces, low fat gravies, healthy varieties of margarine.
- Don't forget herbs & spices. They add flavor and nutrients to food. While fresh is best, even dried is good.
That last item above does add some extra calories, but they also add flavor to healthy foods that other wise might be less palatable. This makes it more likely you will eat the healthy foods. You have to have some wiggle room in any menu for flavor. Other wise why eat at all, or why try to eat healthy?
Hope this helps. Bon apatite! 
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau