I'm looking into switching our bully from Beneful to something better for him. He came to us on Beneful and I didn't want to upset his tummy by switching right away. Bully's are known for their sensitive stomachs (and, ahem, their flatulence), so I'm trying to find something that will be kind to his tummy and his skin. I came across some "breed specific" foods...like Royal Canin. Do you think breed specific foods are just another dog food ploy or could they be on to something there? Royal Canin is ridiculously expensive...about $45 for a 20ish lb. bag.