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The one thing I have noticed, is if you like the EU Books, and I have a friend that does, you tend to like the saga as 1-6, and are more interested in the whole galaxy of Star Wars, while liking the rise,fall, and redemption of Anakin Skywalker.
Personaly, I have never read an EU book, for some reason it just doesn't interest me, but the books continue on with the whole story, that some people see it as giving the saga more depth, and other feel it is just plain boring.