We weren't sure we would enjoy this mattress. However, on the recommendation of the "Nap Guy" we went for it. I expected an adjustment period going from a firm mattress with a light pillow top to sleeping in a cloud, but no back pain here. I look forward to climbing into bed at night. So far, no sweating. 
An adjustable base with cooling gel topper and pillow cap off this luxurious experience.

It is extremely heavy. I can barely lift a corner to place sheets. I am no weakling.
There is a dip in it at about shoulder-height on one side. I think this is just a defect in our mattress, but I cannot imagine trying to pack it up to exchange.

Overall, we love it.