I know this might be controversial but I have had more than one breeder say the most important thing with food is that it says it is 100% complete and balanced on the bag. My vet who is 90 years old this year told me more than once that dogs have eaten puppy chow and table scraps since the beginning of time and lived long healthy lives. It has not been till recently that these high protien, meat first, products have been pushed and since then they are seeing a higher rate of bladder stones and other issues the animals coming in to the vets offices. To be honest I don't know what to believe but I do know that I always bought the expensive meat first dog food and at age 2 my one dog had a bladder full of stones and at age 8 my other dog had allergy issues so bad that the best food for allergies on the market could not help her and neither could raw or cooking from scratch.
We are even having to teach him how to play fetch. I am concerned that he is underweight, so we will get him on a better dog food. We did not want to switch (on Purina) until he was comfortable with his surroundings.
They even put a princess bandana on her last time she got groomed. 
I was just thrilled we were able to find the type we wanted without having to go to a breeder. (That's where the budget dog came from.) We have an appt with the vet and are taking the new owner (DS 11) shopping to buy toys, collar, etc. soon. I will have the list with us so he can pick out the right kind, not the cute one. LOL