I personnally like Xenia. One of the main reasons is that you can almost visably see it grow. That is one major encouragement when you can see your stuff grow.
Notice above post with Xenia has strong powercompact lighting. My Xenia are placed at the top of the tank in strong current as near to my weak light as possible and they still don't do well! I would start with the corals listed in the first 2 posts.
