Did raw for a while and never saw a noticeable difference. The whole food allergy thing is blown out of proportion - a good friend is actually a dog allergy specialist and he has told us that food items represent a very low percentage of canine allergies.
Ouir old staffy bull did fine on kibble (16.5 years when he died). Before that our tibetan mastiff did well on kibble (14 years).
Our current dogs do fine on grain free kibble. Again, did the raw thing, did it for a while and never noticed good or bad changes.
My take is this: dogs are not wolves, they are dogs. Dogs are carnivores, they are pack animals and they are canids - but they are not wolves. Recent genome-wide analyses of dogs and wolves revealed that dogs have more copies of a gene that allows dogs to produce amylase, which is used in the digestion of starches. Wolves have only two copies, domestic dogs have anywhere from four to thirty.
I am not against feeding raw - what I am against is people who feed raw and adopt superior attitudes because they do it.