Hello, I'm more of a reader than a poster, and I'm not sure if we're allowed to post links to other sites or not, but have you ever been to www.dogfoodanalysis.com?
It's a great site, that gives reviews on every food. Lists all their ingredients, etc... And places them in 'star' categories. 6* being the best. Every time I think of changing foods, I always look there first. Then work my way down as what is available in the area.
I just recently switched to Orijen adult, and Stella is in heaven. She's such a pain though, as I'm trying to transition her slowly - mixing the food, and she's picking out all the new pieces to eat!