What dog food for newfoudland/large breed?

I'm having problems deciding what brand of dog food I wanted to use for my newfoundland, large dogs really need healthy bones for their growth and all and I want something that she would like to eat.. I found something online called flint ranch foods and it looks great but their don't carry it in any stores so I would have to order it :( so has anyone heard of this food, is it worth it?? Or is their something just as good in stores?? :)