Which movie is your favorite and why? Who is your favorite character? Which film is your least favorite? Which one would you erase?
So out of six existing main movies, my favourite is Empire Strikes Back. It adds more to Force as a concept (before they reworked it for worse in prequels) and adds personal stakes and character development.
My favourite character is Luke. Sad there are no movies about his fate after Return of the Jedi, but thankfully we have Legend novels