[anonymous]

This is a good site: https://www.mspca.org/angell_services/choosing-the-right-diet-for-your-pet/

and, of course 🙂 http://skeptvet.com/Blog/category/nutrition/

I have found both sites helpful. Zignature kibble (as a base) is my current favorite.
But, I have no clue if it is appropriate for large breeds, it says “all life stages”.