I've never picked up Rebellion myself, but very much enjoy Legacy, Darktimes and a lot of the older stuff like Crimson Empire.
It's very difficult to keep up with the EU being that everything from Clone Wars Animated to the Young Adult novls are all part of the universe
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I do the best I can but its eay to miss stuff, and of course often by mistake and sometimes on purpose the old history gets overwritten by the new. One day the Intergalactic Banking Clan survived for 40 years past the Battle of Yavin, the next it was destroyed just after the Clone Wars