ROTS EVERY single time- Anakin & Obi-Wan vs. Dooku, Obi-Wan vs. Grievous and of course, Anakin vs. Obi-Wan.

Nothing and I mean NOTHING can top the Obi-Wan/Anakin duel. Even thinking about other movies besides SW, still is top tier and it will forever be.

I like all of these movies

What about RotJ?

ROTS