We have had a Kings Down #3 for about 18 months, and it is too firm for me and hurts my back.  I have been considering buying a new mattress, which of course means I am throwing away the $2000 paid for the Kings Down, but good sleep is priceless; right?  Anyway, I've noticed some comments on the forum about some people buying latex toppers and achieving more comfort.  Is this a good idea?  Or just a delay of getting the comfortable mattress I'm longing for?  Also, any thoughts on the latex mattresses for someone who likes a softer feel?