Prequel trilogy, easily. I liked Force Awakens enough, especially when it first came out, and if Abrams made the entire ST as a continuation then I would probably like it better. I despise Attack of the Clones and The Last Jedi, and Rise of Skywalker is bad but extremely fun to watch.
Phantom Menace is bizarre and sags in places, but has some excellent setpieces like the podrace and the lightsaber duel. Insanely good sound design. Jar Jar and kid Anakin are irritating, Padme is a non-character, but Obi Wan and Qui Gon are very likeable and I appreciate all their scenes.
Revenge of the Sith is good enough to tip the balance by itself. As silly as a lot of parts are, the story still has some gravitas and artistry to it and there are some cool fight scenes. I think the politicking between Palpatine and the Jedi Council makes for some well done intrigue. It’s the easiest movie to perfect using fan edits because it’s already the strongest.
Ewan McGregor and Ian McDiarmid are fantastic and carry everything almost by themselves. No one gives a comparable performance in any of the sequels, other than Ian himself when he’s Palpatine again. Adam Driver does well but it’s wasted on what they do with his character.
The John Williams score for the prequels is better and contains some all timer tracks that rank with the original trilogy. I don’t blame Williams for the sequel ones - they’re still good, and if anything I think he didn’t put his full effort because he knew it would be wasted on them.