Wellness has a fish and sweet potatoe formula. The ingredients look great too! Here are the ingredients for this formula:

"White Fish, Ground Barley, Rye Flour, Menhaden Fish Meal, Whole Sweet Potatoes, Canola Oil (preserved with Rosemary, Vitamin C & E), Flax Seed, Beta-Carotene, Potassium Chloride, Zinc Proteinate (a chelated source of Zinc), Ferrous Sulfate, Zinc Sulfate, Vitamin E Supplement, Copper Proteinate (a chelated source of Copper), Copper Sulfate, Niacin Supplement, Manganese Sulfate, Manganese Proteinate ( a chelated source of Manganese), Sodium Selenite, d-Calcium Pantothenate, Vitamin A Acetate, Riboflavin Supplement, Calcium Iodate, Vitamin B-12 Supplement, Vitamin D-3 Supplement, Pyridoxine Hydrochloride, Thiamine Mononitrate, Folic Acid."

They also have a lamb formula as well..

"Lamb, Lamb Meal, White Fish, Ground Brown Rice, Ground Barley, Oatmeal, Rye Flour, Ground Millet, Amaranth, Flax Seed, Canola Oil (preserved with Rosemary, Vitamin C & E), Dried Peas, Dried Carrots, Whole Sweet Potatoes, Whole Apples, Whole Blueberries, Whole Clove Garlic, Alfalfa Leaf, Yucca Schidigera, Lactobacillus Plantarum, Enterococcus Faecium, Lactobacillus Casei, Lactobacillus Acidophilus, Chicory Extract, Glucosamine, Chondroitin Sulfate, Beta-Carotene, Potassium Chloride, Zinc Proteinate (a chelated source of Zinc), Ferrous Sulfate, Zinc Sulfate, Vitamin E Supplement, Copper Proteinate (a chelated source of Copper), Copper Sulfate, Niacin Supplement, Manganese Sulfate, Manganese Proteinate ( a chelated source of Manganese), Sodium Selenite, d-Calcium Pantothenate, Vitamin A Acetate, Riboflavin Supplement, Calcium Iodate, Vitamin B-12 Supplement, Vitamin D-3 Supplement, Pyridoxine Hydrochloride, Thiamine Mononitrate, Folic Acid."

I'd have to disagree that any lamb and rice would be good because aside from the lamb and rice, different brands would have different ingredients...some much worse than others.

You could try having him try out a bag of food and if he likes it, maybe you can convince your parents to stock up on it so you wouldn't have to drive out there as often. Some companies also ship straight to your door as well.