Is Iams Healthy Naturals good?

I'm adopting a dog from the shelter. I asked the shelter what a good brand of dog food is. They said Iams is good. I was comparing labels and found that Iams Healthy Naturals is better. Is that true? Please note that I love my dog but I'm only 13 and my parents just got a divorce so I can't afford $50 a month on dog food. He is an active dog. We run/walk for 60 minutes a day and play fetch for at least 30 minutes. If you have any other suggestions please tell me but I need the dog food to be under $35 for at least a 30lb bag.