My DDs (4 yr old twins), DW and I have been to every character meal except Cape May breakfast which we will do in August. My favorite is 'Ohana breakfast. The food is served family-style, so there is no buffet to deal with and the bread is awesome. My wife loves the french toast at Crystal Palace and I think that it has a great selection for breakfast. We're not really into buffet lunches/dinners. My girls love CRT and Norway for the princesses. In my opinion all of the breakfasts are pretty similar, so go with the characters/locations that work best with you plans.
As far as Garden Grill goes, the food was pretty weak, but we had great service. Also, there was so much character interaction, and the characters came around so often, that my kids got bored with them. They did like the make your own cupcakes though.