Personally I would be just about as comfortable removing the mattress and sleeping on the base!!!
We bought a 4" foam topper for our bed and it is a LOT more comfortable. The king mattress is not a true king size, I used an electric knife and cut the foam to match the mattress size. After cutting the cover that goes over the foam was to loose. I used large safety pins to take up the slack at each corner, now the cover doesn't bunch up and the foam stays in place.
The way Thor carries on about the Denver mattress you would think it's the best thing next to sleeping on a cloud, NOT!!!
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