I would stay with Royal Canine as a base. It is a good food and the dog likes it.
Purina Pro Plan Focus for Sensitive Skin And Stomach is good
Blue Buffalo is another good food
You want to stay with large companies that have been around for a long time as they are more likely to employ a veterinary nutritionist and do feeding trials.
Stay away from small companies, new companies and boutique foods.
Don’t put a lot of weight on “dog food reviews” this website is run by a dentist (for humans) there are no veterinary healthcare professionals affiliated with the site, same with a lot of other dog forums.
Have you seen a vet yet? It is best to find a vet that you like and trust, go for routine checkups and discuss diet concerns with him.
