Don't know much about the different brands, but I do know that Joey went through a period when he turned his nose up at everything. I bought every brand out there; and he just wouldn't eat it. I finally found one he loves, but looking back, I think it had more to do with, he just wasn't
THAT hungry. I know many breeders recommend free feeding until 8 months and food just wasn't a big deal for him at the time since it was always available. Things have changed, and now I think he would eat anything. He goes nuts with green beans.