We have a water-bed 80% reduced motion and it's nice , but the last few years I have been getting pressure point discomfort with only it. Tried more & less water levels and still the same issue.
So I added 1 then a second memory foam toppers ..

Now I am thinking about getting an actual 8" or thicker memory foam mattress to place on top of the water-bed mattress. (after letting some water out to lower the base depth)


So I was wondering who has tried memory foam mattresses and if gel also , and how they like them?