Mark- Maybe a call back to Fromm to find out exactly what they didn't think was good about the grain free line? Even though the protein is higher, it's not any higher than many other brands so you need to know what protein level they think is best? Or was it other ingredients?
I am not a believer in his rating system but lots of information at
Dog Food Reviews and Ratings | Dog Food Advisor. I know he is a dentist, not a nutritionist...blah blah blah, but he is doing this because he loves dogs. You can compare protein levels, read notes etc. There are always good and bad reviews but it may lead you back to a Fromm rotation of their 4 star line (not the grain free).
We have been very happy with it. Another Ali favorite is the Freshpet (in your grocery store) Roasted chicken. She loves it almost too much, makes her a little crazy every time I walk towards the refrigerator.
Look at 3 and 4 star foods. The 5 star foods are probably too high in protein for your little guy. Also read the ingredient list and note controversial items in RED. Good luck and Happy Researching!