I'm not going to be much help, but I vote BOTH!!

We stayed at the GF last Sept and chose 1900 PF for our first dinner. It was SO much fun. The stepsisters and Lady Tremaine steal the show. The food was terrific, but the character interaction was HILARIOUS !! When Lady Tremaine posed for a pic w/ our DD4, she had the funniest look on her face... like "get this dirty smelly icky child away from me!!" it was soooooo funny. And the step sisters... well, they are perfect. It's funny, it's supposed to be a Cinderella and Prince Charming themed dinner, but I'd go again just for the step-sisters !!

oh, and for dinner....the dessert buffet section was AMAZING!! they had these little choc mousse in choc candy cup things that were....well.....if I could have brought the tray back to the table without stares, I would have!
Breakfast was also very good. It's got kind of a mish-mash of characters.... we made that our last breakfast on our last day. They had Alice (who actually wasn't there on our day), The Mad Hatter, (VERY funny character), Pooh, Tigger (who just loved rubbing my DH's head !!), Mary Poppins and Bert. I would say that the character interaction was totally different between the two meals. It was a little less "showy" than the dinner characters. But still alot of fun.
Whichever you choose, you're going to have a fun time. OH!! One tip though....ask if you can be seated in the main part of the dining room. They seated us both times in the center part and I'm so glad they did. You got to see Cinderella and Prince Charming do their dance and see all the characters come out. (unless you like it a little more quiet, then ask for one of the side rooms)