Very Important Question...

okay, not really. But I do want/need your opinion. We are considering buying Jake bunk beds for the new house. We know we want the bottom bunk to be a full sized bed, but are debating between having another full on top or going with a twin. Space is not an issue. Our reasoning behind the bunk is so that Hannah will have a place to sleep when guests are visiting (her room is doubling as the guest room).
So what would you get? Full on Full or Twin on Full or nothing, the kid can sleep on the floor.