I'm not sure what to suggest.. but here's some info that might help..

Purina:
Ground yellow corn, chicken by-product meal, corn gluten meal, whole wheat flour, beef tallow preserved with mixed-tocopherols (source of Vitamin E), rice flour, beef, soy flour, sugar, sorbitol, tricalcium phosphate, water, animal digest, salt, phosphoric acid, potassium chloride, dicalcium phosphate, sorbic acid (a preservative), L-Lysine monohydrochloride, dried peas, dried carrots, calcium carbonate, calcium propionate (a preservative), choline chloride, vitamin supplements (E, A, B-12, D-3), added color (Yellow 5, Red 40, Yellow 6, Blue 2), DL-Methionine, zinc sulfate, glyceryl monostearate, ferrous sulfate, niacin, manganese sulfate, calcium pantothenate, riboflavin supplement, biotin, thiamine mononitrate, garlic oil, copper sulfate, pyridoxine hydrochloride, folic acid, menadione sodium bisulfite complex (source of Vitamin K activity), calcium iodate, sodium selenite.
Pedigree (Complete nutrition):
GROUND YELLOW CORN, MEAT AND BONE MEAL, CORN GLUTEN MEAL, CHICKEN BY-PRODUCT MEAL, ANIMAL FAT (PRESERVED WITH BHA/BHT), WHEAT MILL RUN, NATURAL POULTRY FLAVOR, RICE, SALT, POTASSIUM CHLORIDE, CARAMEL COLOR, WHEAT FLOUR, WHEAT GLUTEN, VEGETABLE OIL, VITAMINS (CHOLINE CHLORIDE, dl-ALPHA TOCOPHEROL ACETATE [SOURCE OF VITAMIN E], L-ASCORBYL-2-POLYPHOSPHATE [SOURCE OF VITAMIN C*], VITAMIN A SUPPLEMENT, THIAMINE MONONITRATE [VITAMIN B1], BIOTIN, d-CALCIUM PANTOTHENATE, RIBOFLAVIN SUPPLEMENT [VITAMIN B2], VITAMIN D3 SUPPLEMENT, VITAMIN B12 SUPPLEMENT), TRACE MINERALS (ZINC SULFATE, COPPER SULFATE, POTASSIUM IODIDE).
Taken from Jordan's site:

"BHA (Butylated Hydroxysanisole) & BHT (Butylated Hydroxytoluene) - Often seen together, these carcinogenic chemical preservatives have been known to cause cancer, tumors, epilepsy, kidney failure, and a number of other things. A dog who eats food containing one or both of these has a 60% chance of developing urinary stones."

Meat and bone meal automatically makes me think of road kill, simply because it isn't a specific type of meat that's listed.

Chicken by-product include intestines, beaks, feathers, and other parts that wouldn't be sold for human consumption.

Good luck deciding