We've eaten at all 3.
Goofy's - most food variety (including desserts) but probably 3rd in quality, most characters, a more hectic experience
PCH (before Lilo & Stitch) - more calm, fewer characters, omelet bar, pretty good food quality
Storytellers - fewer characters and not all come to the table, calmest experience, fewest food options but good quality, can order off a menu instead of eating off a buffet
We like to go to Goofy's for a good time, Storytellers for for a quiet breakfast and if we don't feel like eating off a buffet, and PCH for a change of pace.