Hi Karen.
I’ve noticed that you are using your email as your username which means that automated spambots will be able to harvest your email and add you to their spam lists. To change your username you would need to log in The Mattress Underground and click on your Profile and then the Edit button. Let me know if you need any assistance with this change.
I am not sure what you’ve read since finding our site, but I’d suggest that along with the great personalized advice you’re receiving from TMASC (Thanks TMASC 
! ) you also go through a few of the articles and discussions that lay out the mattress shopping basics. The most important steps in shopping for a mattress are clearly stated in the mattress shopping tutorial here, which include all the basic information, steps, and guidelines that can help people make the best possible choice. Two of the most important links in this tutorial are post #2 here which has more about the different ways to choose a suitable mattress (either locally or online) that is the best “match” in terms of “comfort”, firmness, and PPP (Posture and alignment, Pressure relief, and your own Personal preferences) that can help one assess and minimize the risks of making a choice that doesn’t turn out as well as hoped for, and post #13 here which has more about the most important parts of the “value” of a mattress purchase which can help with meaningful quality/value comparisons between mattresses in terms of suitability (how well you will sleep), durability (how long you will sleep well), and the overall value of a mattress compared to other finalists based on all the parts of your personal value equation .
Outside of PPP (which is the most important part of “value”), the next most important part of the value of a mattress purchase is durability which is all about how long you will sleep well on a mattress. This is the part of your research that you can’t see or “feel” and assessing the durability and useful life of a mattress depends on knowing the specifics of its construction and the type and quality of the materials inside it regardless of the name of the manufacturer on the label or how a mattress feels in a showroom or when it is relatively new so I would always make sure that you find out the information listed here so you can compare the quality of the materials and components to the durability guidelines here to make sure there are no lower quality materials or weak links in a mattress that would be a cause for concern relative to the durability and useful life of a mattress before making any purchase.
Phoenix