Don't go slamming Diamond. You may have had a dog allergy but the coat thing is totally unbelievbabble (not spelled wrong).
First off the rice they use is the cheapest form available and right after that are all the grains found not to be benificial to dogs. Let's see, wheat corn sourghum and barley. What do they use for the omega 3 and 6 proteins? Those grains are replaced in Diamond by Fish meal, chicken fat and egg.
The only corn my dogs eat is corn on the cob and that around here is strictly seasonal.
I just stated what my experience with Diamond was. I've actually heard similar things from other breeders and from several puppy families that tried it, so it's not just me.
I am actually a big Science Diet fan for several reasons. To begin with I'm really happy with how my dogs do on it. I can see the results, which is hard to describe to others. I don't have a problem with fillers and I'm going to tell you why. I have talked with numerous people that have their dogs on "all natural" foods that mean you can feed the dog less because all the nutrients are in less food. That's great - except every single one of these people has to give their dog carrots, green beans, pumpkin, apples or some other fruit or vegetable as a filler - that has no nutritional value for the dog what-so-ever. So they are feeding a more expensive food that has less fillers and then buying fillers so that their dog doesn't act like it has never been fed because it's getting about half as much food as it really wants to eat. I give my dogs 3/4 - 1 cup of food twice a day and they are happy as can be and we have no food aggression issues and no weight management problems (weight management is another complaint I have heard about Diamond).
One of the reasons that I initially tried SD was because my vets recommended it (and to clarify I trust my vets 100% because they are the exceptional kind that you can call at 2 AM, we have an amazing relationship and they have done some out of the way stuff for us - they are also highly educated and are not your normal vets in this area - each of them has done additional schooling and seminars). They gave me a truck load of literature to read so I'm not just going off of their word either. One of them attended a seminar in Minneapolis that was hosted NOT by a dog food company but sponsored by a group of veterinarians and in all her research she prefers Science Diet. I think that too many folks knock Science Diet without having ever tried it. I personally don't cut a food down that I have never used.
And by the way - dog food companies don't actually HAVE to include all of their ingredients on the labels...