I'm currently trying to figure out which food is a good one too!  I found this link (below) in a previous Y.T. thread. I think it's quite helpful!  Please check it out.  By the way I've been feeding my Chibi Eukanuba 1-6 years weight maintenance food, I thought it was a good food, but now I'm not so sure based on what I've read so far...
  http://www.dogfoodproject.com/index.php?page=intro 