Yeah, I have about that many on my own computer, tree object generators that is, and I''m liking Carrara's plant modeler more and more. I've gotten some trees out of it that made me go "wow", but then I've always been easily entertained. 
       Another reason I'm glad that you asked the original question, which led to me asking the question that started this post; is that I learned that the hybrid settings really are useful when I kind of dissected the preset aspen tree. I'm going to "backward engineer" it so the settings make sense to me. I've never before had luck with the ramified and hybrid settings.