We have been feeding Humphrey Authority (PetSmart's private brand) puppy food and are preparing to switch him over to the adult formula. We have had him on Royal Canin but quickly switched due to the high expense. I have heard that Blue Buffalo tends to cause excess flatulence, but that is a common trait of bulldogs in general.
He seems to love the Authority brand, and he has not had any health issues, allergies, or other problems since he has been alive!
Good luck finding Lola the perfect food!