Good alternative cereal

My son is allergic to milk & soy so, we are concerned about other allergens. Plus a lot of baby cereals have milk or soy in it. So we use Earth's Best Multigrain rice cereal. But, recently we bought Puffed Millet. We added formula and blended it. My son loved it and it is full of iron, Vitamin B's, etc. It's a healthy cereal for babies. It also has no gluten, wheat, etc in it.