We find that when it comes to character meals, we stick to just the breakfasts. We find the dinner selections to be awful, with the exception of Akershus which we enjoyed lunch at on our last trip. For the most part, the breakfasts are very similar, but each place has a dish or 2 that makes them all a bit different. My girlfriend loved CM's on our last trip. We got decent character interaction, plus it's the only place to see the fab-5 together. My favorite is a toss up between Donald's Breakfast Safari at TH in AK and the Supercalifra.... whatever breakfast at 1900 PF in the GF. The breakfast characters at 1900 PF are Alice, Madhatter, Pooh, Tigger and Mary Poppins. The Madhatter is a lot of fun. Some have made note on the Cape May breakfast, the only problem with that is that unless you are staying in the EPCOT resort area or have your own car, it can be quite a pain to get to in the morning.
For the most part, breakfasts are interchangeable. It really all depends on the characters you want to see.