Didn't get to set this up for almost a month after I received it due to some home repairs going on.  Oh, but when I did, It was heavenly.  It is firm, (which I like and am use to),  but the top creates a soft cloud aspect which is wonderful.   The best of both worlds -- Support and softness.  I have psoriatic arthritis, two replaced hips and back problems due to the arthritis.  I was very concerned about this being too soft with little support.  But, it is just right.  I have slept more soundly since sleeping on it and would recommend it highly.  Also, just a note, unlike other beds that you may be reviewing, this bed does not come in a small box all rolled up.  It comes delivered full size.   I purchased a 5"boxspring for this mattress for mattress support since it is on an antique bed frame.  A platform bed would not need it.  Overall, I am very pleased with this purchase.  For reference, I am 5'4"and weigh 175lbs. 
My husband is 250lbs or so, 5'10" and loves it also.