If your planning on purchasing a puppy from us here's some food for thought!! 
Prior to our puppies leaving our home they will have been started on Royal Canin Puppy food, so it may be a great idea stocking up on a bag prior to taking them home.
We feed our Adult GSD's Purina Pro Plan 30/20  Adult Dry Dog Food and we like to nutritionally supplement their diet varying it weekly with a few additional goodies