My dogs do the best on raw. I cut and quarter my pigs hair bone and all then freeze it. I can tell the biggest difference in the heat. Dry kibble takes a lot of moisture to digest and can dehydrate your dog on hot days. Raw being 70% or more moisture is much easyer on your dogs system on hot days. The down side of raw is its a pain to keep up with, and some dogs that have never shown any sign of food aggression towards others dogs can be very aggressive when given raw. That just tells me even the dog knows it's better for them. My raw food cost is zero since I feed the pigs I kill. I don't feed big boars but feed everything else that looks healthy. Hears a video series made by a vet if you are on the fence about feeding raw.
http://youtu.be/G3wLTlqnMMg