Solid Gold Wolf Cub is really good food. My friend raised his enormous GSD on it, and he is structurally very sound and healthy.
I had my foster puppy on Wellness Just For Puppy, and he had loose poops and HORRIBLE. GAS. I googled it and found countless posts/questions/complaints about puppies getting gassy and diarrheaey on Wellness puppy. After that, I wouldn't recommend it, but I'm sure a lot of people have good results with it. The ingredients look good.
Can you get Natural Balance? The Ultra formula is a quality, all life stages food.