I just did both, Chef Mickey and CP and I lean towards CP. Although I love Mickey and his gang, I wasn't thrilled by the food. Also, the characters are in a big hurry at Chef Mickey's. The only characters that paid some attention to us were Goofy, he was outside, and Dale who was really sweet.
At CP we had an early lunch so I guess that might have helped. We had a decorated table (we were on our honeymoon), had a really nice waitress and all the characters came by and spent time with us. Eyore and Tigger were awesome; Tigger even sat at our table and at others too and just played around. Pooh was adorable and Pigglet made sure to get a picture with us even though it was time for their "dancing" thing that they do. CP also has great food, I really really enjoyed it and I'll be sure to do it again next year.