Ah, Ren said if you're using a series just use it once, but since you ask my order of preferance goes....
Star Wars:
A New Hope, Return of the Jedi, The Empire Strikes Back, The Force Awakens, The Last Jedi (I am guessing it will end up here...) THEN Revenge of the Sith, Attack of the Clones, The Phantom Menace.
Indiana Jones:
Raiders of the Lost Ark, Last Crusade, Temple of Doom, Kindom of the Crystal Skull, Untitled 5th movie.
OH! My tenth film is Step Up 2: The Streets