Le Cellier Steakhouse is my first choice when making a reservation at World Showcase. The big problem there is it is very difficult to get a reservation there.
Ohhh! Tough but good questions! I have two, I can't choose! Every year since 2005, we go to Rose and Crown. Its a tradition and we love it! We go for lunch now instead of dinner. Chef de France for dinner. We just have the best time there, love the atmosphere and it's my DH's fave. It used to be Le Cellier but he switched to Chef de France.