The lightsaber duels makes this one good. The writing should have been better than the Jedis knowing nothing of the Anakin and Padme relationship. I mean they did kiss in front of the Jedis during the arena scene in Episode 2.
While Anakin said to Obi-Wan a couple of times how he wanted Padme bad. Anakin turning to the darkside because he believed only that can save Padme and that the Jedis were the bad guys. I didn't 100% buy either.
Since how can he think something called the darkside is good ? The same way the Nazis or terrorists think they are the good guys I guess.
Ewan McGregor isn't bad at all but he was a choice for worse actor of 2005 at imdb that year. He was far better than Hayden. While Ian McDiarmid steals the show when he finally reveals to the Jedis that he is a Sith Lord.
I also like how Palpatine turned on Count Dooku in favor of wanting a new apprentice, Anakin. Since if you think of it; he did the same with Luke and Vader in Return of the Jedi. He wanted Luke to kill his father and join him. It shows how little his apprentices mean to him since he easily trades them in when he finds someone more powerful.