Ok, so I'm fessing up...we've been feeding Rex (4 months old) Iams Large Breed puppy. I'm ashamed of myself. I've heard a time or two on here that there's a better alternative within that same price range. I think we're currently spending $30 for 30lbs every 2 to 3 weeks since our adult black Lab wont stay out of the puppy food. Grrrr. So I ask you - Can you give me some good alternatives that I could buy instead? And should I just switch Rex to adult food since we can't keep the adult dog from sneaking the puppy food, or is 4 months too young?