Oscar says hands down, Royal Canin 33! I got a bag of Innova to mix with his Royal Canin 33 and that little bugger eats the Royal Canin 33 and spits the Innova back out on the floor! He refuses to eat it. I got some sample bags of Evo and he would not touch that either. So I guess we will have to stick with the Royal Canin 33. I tried to switch due to Oscar's excessive gas! It is killing us...thought getting him off corn would help, but he just won't switch! He loves the Royal Canin 33 so I guess I should be happy he will eat a dry food so well and just get on with it. It is a good thing this pet store will take it back too...they said if he would not eat it, to just bring it back and we could swap it for the Royal Canin 33...Stinky Poo Yorkie Farts...they are just the worst!!! LOL Anybody else have a gas issue with the Royal Canin 33 or any other food?