u/BarnacleAromatic5210

I am looking to buy a new mattress for me and my wife. I am looking for something that is dual adjustable for firmness and dual adjustable for temperature. And I would like the temperature control be significant. I sleep pretty hot and want it to cool me down quite a bit. Does anyone have any suggestions on this. I have done a lot of research but I am worried that they will not do what they say they will do.