I probably change my opinion every other day, but this is what I am feeling now:
A New Hope
Empire Strikes Back
Rogue One
Return of the Jedi
Force Awakens
Revenge of the Sith
Phantom Menace
Attack of the Clones
Hope and Empire tend to switch spots now and then.
Jedi and Rogue One tend to switch too. Heck, sometimes I will even put TFA above one or both of them. But this is how I would rank them now.