Although dogfoodanalysis.com has alot of beneficial information to aid you in your search for the non-existant perfect food, the information there is only based on the opinions of the site editors, not long term, extensive research.
I suggest trying the following link as well:
Dog Food Review Ratings
It links you to several sources that examine commercially processed foods, home cooking and raw diets as well as the pros and cons of each option. You can more than likely pick up any type of commercially manufactured product and find something in the ingredients list that you aren't 100% comfortable with feeding your little one.
Also, remember that what is best for one person's pooch may not be the best for YOUR little one. Research and find a product that has something to offer that you like and then try them out. You will know when you have found a good match for your baby from the results you see.
Also, there is a sticky at the top of this section that gives you contact information for various manufacturers that will often send you free samples to try or coupons for their products.
Good luck!