What is the best dog food?

i had my dog on beneful for a while, then recently i saw that her paws were raw. so i took her to the vet and they told me it was food allergy that was causing this, so i went to petsmart and spend more money on better food. i bought innova, so she ends up loving it and now out of no where she wont eat it, she'll sniff it, push it to the side, or even just look at it. the bag of food is half way down. she'll wanna eat my roomates dog food, but she wont eat hers. can anyone recommened great quality dog food. or a list of them i dont care how much it would be. if i cant afford great food then obviously i cant afford a dog.so someone please respond asap! im leaving in an hour to go groceries and i will stop by to get her some food. because she hasnt ate in 2 days, besides water and trying to eat my roomates dogs food. instead of her own.