I own a king sized, King Koil bed and I love it! I think it competes well with the other more expensive brands of mattresses. I find mine to be very comfortable, and it has held up very well, even with two active children jumping on and off of it at any given time. I highly recommend anyone thinking of buying a new mattress in the future, to definately try the King Koil brand first.
King Koil King Size Mattress is recommended by lepiazza72