Natures Variety (Petco) and Wellness (Petco and Petsmart) are both good brands. I also like Fromm's (formed my GSD poops up), Acana, Orijen and Natures Logic.
This website will give you a good low down on dog food brands. I have found it very helpful. DogAware.com: Dry Dog Foods (Kibble and Dehydrated)