I bought both the Dajai platform bed and the Soft and Serenity Gel foam mattress to go with it.  The shipping and delivery were less than ideal, but the end result is excellent.  The bed is very comfortable and the platform bed is sturdy--even though I thought it wouldn't be because slats were holding the mattress up and not a solid piece of wood.  After the mishaps and doubts, I am very happy with this purchase.