We literally just got home a couple of hours ago...so here are my opinions on the ones we just did (sadly, I had to cancel my 'Ohana this morning b/c there just wasn't enough time).
1) Crystal Palace (B) - we really liked this. The food was pretty good, the character interaction was excellent, and the CMs were phenomenal (I'll get into this more when I post my trip report)
2) 1900 Park Fare (B) - This was our fave. The food, while still buffet fare was the best (loved the salmon and the lobster eggs benedict), the service was very good, and most of the characters were super with the kids. The Mad Hatter was a bit awkward, but Alice, Mary Poppins, Tigger, and Pooh (best Pooh experience of the trip) rocked.
3) Tusker House (B) - I would not do this one again. It didn't help that we were really rushing to get there due to late bus service, but the food was very average and the character experiences were the worst of our trip. They weren't bad, just very generic and a bit rushed.
We also did Akershus for lunch, CRT for lunch, and Chef Mickey's for dinner. I can't speak for the breakfasts at these places from the food standpoint, but as for the character aspects- we'd do CRT and Akershus again, but we'll probably skip Chef Mickey's on future trips.