I've done Goofy's more times than I can count (literally, I lost count) since 1992. The buffet can't be beat in size or variety. To me, the food is not secondary. I want great food as well as characters, but if it is a slow character day, I want good food! Goofy's is a real, all-you-can-eat, serve yourself, large buffet. Goofy's character roster for any given day can range from 5 to 8 onsite, and two of those will likely be Princesses.
Here are some extensive photos of Goofy's Kitchen breakfast buffet offerings, courtesy of Disneynerd420 (taken in Fall of last year):
(Scroll down to Posts #338 and #339)
http://www.disboards.com/showthread.php?t=2268157&page=23
Minnie & Friends is 'buffeteria'-style, which is slightly different, with a smaller selection. While Minnie & Friends clearly has the most characters out of all the character meals, there have been consistently mixed reviews of the food, with a slight edge towards the negative - more so than any other character meal. Much of that is subjective, though - what's "bad" to one person might be great to someone else, so I can't really put too much stock in bad food reviews of M&F unless
everyone started saying it was horrible, and that has not happened yet. Also, every restaurant has its 'off days' - character meals or otherwise.
I like the cozy vibe at Storytellers too, and I think that kind of character meal (laid back, quiet) works for some people. It's not my favorite character meal, but many folks love it. It's not the kind of in-your-face, one after another after another, character onslaught that you get at Minnie & Friends. It's not the high octane fun that you would find at Goofy's or Minnie's or probably Surf's Up with Mickey too. Storytellers almost seems to me to have the vibe of, "
Oh, I just stumbled upon this restaurant that happens to have friendly woodland creatures visiting the tables."
It's sort of like a restaurant that just happens to have some characters onsite as an after thought (usually only about 5 characters). It's not like there is a big to-do about the characters at the Critter Breakfast. The good thing is you can order from the menu or the buffet, but the buffet is small and the menu items are costly for what they are. The buffet is a better bargain in that case.
Be sure to check out our character meal photo thread (start at the end and work backwards to see the more recent character sightings) to get an idea of who you will see at which place:
http://www.disboards.com/showthread.php?t=2234435