Ah, I didn't realize Mantano had a free version. I just downloaded it and it's the best PDF reader so far. I can choose which folders to sync (so I can store the library on external SD), and it has a very pleasing graphical interface; however, like Aldiko, it isn't recognizing my author/titles.
For example, Robert Bruce Thompson's "Building the Perfect PC" shows the title "Building the Perfect PC- Robert Bruce Thompson" but displays "unknown" for the author. I can add tags, and I can even edit the title, but I can't seem to edit the "Author" field.
Well, it's definitely the best eReader I've found on Android so far, but it's still no iBook. I'm still waiting for day that Calibre gets ported to Android. That will end the insanity.