I think Eukanuba, Iams and Sensible choice
are all good dog foods.
I started feeding human grade,
Innova and Canidae a few months ago
with good results. There are many good
dog foods out their, (some better than others.)
My theory,
Check the ingredients,(the first ingredients listed are the most used, and so on.)
Look for the guaranteed analysis and feed trials.
Feed a food that your dog likes to eat, that keeps him looking good and healthy.
What works for one dog might not work
for another. So sometimes it takes
a few tries to get it right.
JMHO