Best dog food for Cocker

Hello,

I have a Cocker Spaniel called Alfie. He is about 13 months now, and from a pup I have always feed him Royal Canin food.

That is what the breeder feed the pups, so I just kept feeding him the same food. I was in the pet store one day getting more food, and one of the staff said that Royal Canin food is not the best quality of food.

He told me about this website and to go on and have a look to see the overall score that each dog food gets.

I just want to give Alfie a good quality food. What food would be best to give Alfie?