Dog foodi

Just curious, I heard through a family friend about rachael Ray dog food, and I thought id get my babies something more healthy. I read the back and I totally didn't snap that its a definite change for my dogs diet, and it may take a few days for some getting used to. I feel kind of bad :/ one seemed to love it, but daisy cake hasnt really touched it. I should of done some research before. What do you find is best for your Dog when it comes to different brands?