I have still to this day not seen Attack of the Clones but I have heard the score and I like "Across the Stars", a very epic and beautiful theme that almost rivals "Han Solo and the Princess" from Empire.
Personally, I don't think Williams never again came to the heights of the period '77 - '81, there's something raw and primal about the sound from Williams and the London Symphony Orchestra from that era that I thought was gone even at the time when Jedi was released, it could be a result of the studio and the mixing at that time but just take a listen to the brass in Star Wars or Raiders and you'll know what I'm talking about. Everything sounded so slick and perfect later on.