i think this is a totally subjective topic. i really can't say i've ever had a "bad" experience anywhere- although, like i said, it's really subjective.
for example, my wife and i love crystal palace for breakfast before the park opens. but we understand what it is- characters, an overpriced breakfast buffet, great location, average service (typically), and a bunch of fun!
just realize what you're getting into. i know i've enjoyed a few spots just because they were new to me too- lol!
all in all here are my so-so spots. in other words, i enjoyed them, but i wasn't blown away (and certainly price plays into that for most). i've enjoyed them all, but there are other places i'd rather go to instead. an i appreciate them for what they are.
crystal palace- see above
tony's town square- food was ok, the entrance stinks
liberty tree tavern- loved the food! but pricey for the value
hoopdie doo- great entertainment! but food is average
wispering canyon- great for kids, but again, average food
the living seas- amazing theaming, but the food was average
alfredo's- maybe it was just me, but the food was only ok
tres chefs de france- again, well theamed but average food
sci-fi- might be at the bottom for me, service was iffy, so was the food
basically, any buffet is what you would expect. and you def pay for the characters- lol. but even when i say average, that's usually average for disney- which is pretty good!
enjoy whereever you decide! really take it in- you're in wdw!