I actually feed my dogs and cat's blue buffalo... Days after they started eating 100% blue, their coats were noticeably shinier and A LOT softer.(well mostly the cat's coat were softer since my dog doesn't have a fluffy soft coat to begin with lol) My dog also seems to have more energy when we go on walks, because he's turned them into runs. Lol
I agree with the science diet... It's truly overpriced junk. Sorry but it's true. Vets are paid to endorse foods, and that's why they endorse overpriced junk. Another thing about these quality foods is that they are so nutrient dense that your dog/cat will eat less of the food. So it saves money.
The ingredients label is your friend. :)