We do a blend of Nature's Variety Instinct commercial raw, Stella & Chewy's freeze dried commercial raw, Taste of the Wild, and grain-free Nature's Domain. Sometimes we offer feeder whole prey too, but not often.
I'd like to try Orijin/Acana some day too. My ferrets are on Orijin and raw..
Orijin, Acana, Taste of the Wild, and Wellness Core are top brands and would definitely suggest them for kibble.
Stella and Chewy's and Nature's Variety Instinct are great for commercial raw.
Science Diet is absolute crap. There is nothing very good about their food. Most of their ingredients are plant/grain/corn material.
Check out this site: http://www.dogfoodadvisor.com/
It rates every dog food and breaks down evaluations ingredient by ingredient.