I have been looking on line and in stores for a replacement and have done a lot of research and have come to the conclusion that mattress shopping has been the worse experience of my long life. At lease when you shop for trucks there are numbers to compare, not so with mattresses. It is impossible to compare brands, models, materials........now I know why there are so many mattress stores.......there must be a thousand percent profit in each mattress because there never seems to be any customers in the stores. I have a headache from reading so much information. And I do not have the info to make an informed decision.