That's what we use too on the 3 Labs. Of course, they will eat *anything*.
Didn't I read somewhere, it's not the ingredients in the food, but the toasting method [which is not regulated/or considered an ingredient] to make the food more brown looking?
I read a study, three or four years ago that the size of the kibble matters in the toasting process. In the smaller kibbles, the heat penetrates entirely crossing borders twice killing all nutrients. The heat doesn't destroy nutrients in the larger pieces because it passes only through one border once. Compare a hamburger pattie and a meatloaf baked at the same temperature for the same amount of time.