"Very best...no taking turns, no books, let the leaders lead and the rest of us sing in the choruses and occasionally ask if someone wants to lead one."
Once again, "the books" comes up. I'd rather have someone sing/play from a book, just about any book, than have to put up with someone who can't remember his words or music. I also agree with Tootler that everyone ought to have the opportunity to lead or choose a piece.
I do NOT want to hear a complaint that the song I choose "isn't in the book." People need to be ready to hear and learn something new, and some songs are just better with a solo on the verses and group on the chorus.