I love these books, too!  I can't wait to read The Fire Eternal!  My favorite characters are Lucy and David, but Zanna is great, too.  I love all of the dragons.  David's dragon is probably my favorite--but I also like the listener, too.  Sorry I don't know any names. I haven't read them in a while.  Can you believe what happened at the end of the third book?!  I just hope the next one will be happier. (Does that need a spoiler alert?)