We have found all to be good. Hollywood and Vine has a great buffet, one of our favorites. Remember ADRs are a fantastic way to get into the parks before they open. Just another perk! It just depends on what characters you want to dine with. Remember that there are not only different characters, but some different attire also. If you have little ones that will need help at the buffet you may want to opt of a family style breakfast. That way you don't have to worry about working in trips for food between character visits.
Trying the new character breakfast at Garden Grill in a few weeks, anyone tried it yet? I know the dinner is fun and good there!