If you have decided  to go for a complete diet, Goggle, best complete for a working dogs. 
  
There are some good ones about, orijen is just one of many, but read what's in the ingredients, if any mention of cereals in the first two lines I would avoid it, and some well know expensive ones can be just as s##t as all the cheap ones. 
  
If I've ever had to use a complete  always orijen, they do three different  meats red, white, and fish. 
  
orijen  red ingredients.txt