I like both, but it's kind of like comparing apples and oranges since CM's is a buffet and Ohana's isn't. I like the more relaxed, quiet, cozy feeling of Ohana's in the morning. Plus you get to be waited on and see Stitch!
CM's is fun too, but it seems louder, busier, and more hectic since it's in an open air area and a buffet.
I guess it just depends on what you're in the mood for!