Raw (as in prey model) has a few benefits that I like. Crunching through bones is great for the teeth, no plaque build up. The in

ut ratio is way higher (this is the ratio of food going in the sharp end vs: the food coming out the wagging end). Cleanup is a breeze, and if you forget, it just dries up and goes away.
Overall, coat and skin are in better shape, no doggy smell especially on one of my girls, and overall increased vigor.
Cost of Orijen kibble, even with a discount, is roughly $150/month. Raw costs me about $80/mo, so a huge benefit there. I do get a huge discount on chicken backs though, so not sure how price measures up for the average consumer.
Overall though, if one has the time for it, I think it's a great diet, and better than kibble can ever be. Kibble isn't bad, it just isn't as good, IMO