It really depends on what characters you are hoping to see!
This year we are doing CRT and Garden Grill. That way my girls can see both the princesses and Mickey.
I think all girls need to eat in the castle at least once in their lives, and that's this trip for us. But otherwise, to see the princesses, I recommend Akershus. It is GREAT and a less expensive way to meet all their favorites, plus a picture is included in the price.
Chef Mickey's is popular, but we prefer the atmosphere and food at Garden Grill, so we always go there.
If your kids like Disney Junior, then Hollywood & Vine for breakfast is great. If they like Pooh, then Crystal Palace.