until recently we fed purina brand kibble. 5 1/2 years of purina and my husbands dog's allergies have gotten worse. In the last two months we've made the switch to a medium cost/quality food from Tractor Supply 4health. The dogs love it. its better than purina. They're doing very well on it. If it hadnt been for Riley's allergies we would probably still be on purina but there comes a time when the CONSTANT scratching wears down on a persons nerves. Its a quality food that fits without our budget. You could check it out. There are a couple different formulas as well. You dont have to feed something crazy expensive to get good quality. but i agree Science Diet is crap food.