They were good foods about 10 years ago, before M & M Mars bought the brand. Multiple brand recalls later, including food that made a cat of mine violently ill (literally wiping down the walls from explosive diarrhea), the entire brand is mediocre at best. The quality just went way downhill.
Some talk about Loyall but just look at the ingredients list because it's about as bad as they come, mostly by-product and fillers in the primary ingredients and that's their "high performance" food. The brand is owned by a grain company that specializes in horse feed, Nutrena.
I have fed a bunch of foods including Nutro, Innova, California Natural, Canidae, 4Health, Orijen, Wellness, Avoderm, and Nutrisource, to name some of the brands. For the money and for the quality of the ingredients, Earthborn Holistic is the best I've found. I get it at a local feed store as it's about $7.00/bag cheaper there. As hard as I train my trial dog, the Primitive Natural formula is the only food I found that has enabled him to maintain his weight and coat. It is a very rich formula and is definitely not for all dogs. I recently helped a buddy with his young chocolate male and got him to switch the dog over to the puppy formula from Eukanuba Large Breed puppy. After he settled into the food about two full months into it, the difference was extremely noticeable. His coat got like an otter's, tight, dense, and slick. His muscle tone was great. He looked like a racehorse with his coat and the visible muscularity in his shoulders and hips. No, I don't sell it or work for the company. It's just a great product that I really believe in based on the results in multiple dogs.