even tho they are all part of a series, the movies are so unique that they can stand on their own merits...i agree that e4 was new and refreshing, but e5 had great plot twists...jedi was more fun, and the showdown with the emperor was great.
e1-3 suffered from two main characters whose apparent boredom was contagious...while the love story was necessary to tell the whole story of anakin's transformation, it bogged all three episodes down to a crawl.