I'm going to recommend Kerr's Dark Force Rising, Stankpac, and actually my own edit of Ep. III as the ones I like to watch the most. (notice I didn't say best... I tried to cut Ep. III into a version I'd enjoy, and I was pretty successful, I do enjoy watching that edit.) Kerr's, though short, really changes a lot of things in a very interesting way. L8wrtr's version is sounding more and more interesting all the time, so that one will be good once finished too.
I'd say go for variety! The best thing about Star Wars is that everyone has a different idea of what makes it good for them. The different interpretations are endlessly interesting.