We've done Chef Mickey's, Crystal Palace x 2, 1900 PF x2, Tusker House, Hollywood & Vine and 'Ohana for breakfast.
The only one we'd NEVER return to is Tusker House. I feel like a broken record griping about it, but maybe it's b/c I was soooooo happy to get the last minute ADR there, it had such good reviews and sounded PERFECT for our AK day. Sure, they can't be blamed for our bus being late and the sprint from the entrance to the restaurant BUT they are to blame for the bad food (bad in that it was underseasoned and dried out at 8:10a), the service was spotty, and the characters were the worst we've ever had at a character meal - and we've done about 13 in the last year. Seriously, they all needed a strong cup of coffee.
That being said Crystal Palace (pre-park opening) is the best breakfast for us. 1900 PF is a close second just b/c I love their pecan sticky buns. Seriously, breakfast is hard to mess up - so with the exception of Tusker House- I'd recommend all of them.