I also vote for both. Odo gets a rotation of all kinds of things including some Nutro, some Innova (both EVO and regular), and some Natural Balance. He's got a sensitive stomach, so I have to avoid certain foods, but the rotation seems to help.
My cats are on an all wet diet. I'm rotating between several brands of wet food. Currently it's Natural Balance, Wellness, Innova, EVO and Avoderm. None of my cats likes Nutro. I tried both Nutro Max and Naturals in several flavors. They won't touch it. I wish they did like it as it's a little cheaper than what I'm buying.