I used to have my dog on a raw diet (meat/bone/offal only, no veggies/fruits/grains). Although she's generally a pig when it comes to food of any sort, she was very picky when it came to raw. I found I couldn't get her to eat some of the stuff needed for proper balanced raw nutrition (like bone-in chicken and fish), so I switched her to Evo. She became very gassy on Evo (both the red meat and the chicken/turkey), even after 1 year of eating it. I switched to Orijen about a year ago I think, and have never been happier. Orijen seems to be a very popular food these days. I recommend it to anyone to at least try out for 6 months.
I also daily feed plain yogurt, Tripett green tripe, and Wild Salmon oil. I have always fed my dogs twice a day, and I have been considering replacing the evening meal with raw.
Never mix kibble with raw food as they are digested at different speeds. I believe raw is digested in 4 hours, where kibble takes 8 hours.
I'm not sure if it has been posted yet or not, but here is a link for those who are interested to see how each brand of dog food rates and why:
www.dogfoodanalysis.com