Hi BigCTM,
I’m sorry to hear that your mattress isn’t working out for you.
There are so many combinations of layers and and firmness levels possible with latex mattresses (or any type of mattress) that finding the right combination in terms of PPP (Posture and alignment, Pressure relief, and Personal prefernces) can sometimes be tricky regardless of the type or quality of the materials inside it. Even if two mattresses use the same type of material there are an almost infinite number of designs and firmness levels possible and a mattress that works well for one person can be completely unsuitable for someone else to sleep on. There is more about some of the more common “symptoms” that people may experience on a mattress in post #2 here but finding the underlying cause of specific symptoms can involve some detective work and can be almost as difficult as a health professional trying to “diagnose” the cause of back pain when there are many possibilities that could be a contributing factor.
Even something as simple as a different cover or quilting material can make a significant difference and some of the Jamison mattresses used to use fairly thick quilting materials. You can see one of their latex mattresses from 10 years ago here for example which had 2.8" of 19 ILD blended Talalay latex over a 5.6" support core of 36 ILD blended Talalay and a quilted cotton/viscose cover that was quilted with a “silk blend” (which can mean silk with polyester fibers). They also had an active box spring which can change the feel and performance of the mattress as well. If you put together these same materials and components today you would have the same mattress regardless of the name of the manufacturer. Sometimes it can also be a matter of our bodies changing over time and a mattress that worked well 10 years previously may no longer be a suitable match for someone.
As you probably know from your research here even the lowest quality of materials such as what you may find in some Corsicana mattresses can be a good match in terms of PPP … the problem is that they don’t stay that way for nearly as long and lower quality and less durable materials will soften and break down much more rapidly than higher quality and more durable materials.
Post #13 here has more about the most important part of the “value” of a mattress purchase and by far the most important part is that a mattress is a good match for you in terms of PPP regardless of which type of materials or components it uses. Online reviews can only tell you how suitable a mattress may be for someone else that may have very different needs and preferences than you do and they have little bearing on how suitable a choice a mattress may be for you (see post #13 here).
After the suitability of a mattress then the quality and durability of the materials is the next most important part of the purchase.
The key is always to remember that suitability and durability are not mutually exclusive so that regardless of which mattress you purchase that you are confident that it is both a suitable and a durable choice.
Jamison certainly makes some good quality mattresses and their latex mattresses use the same type of latex that they did 10 years ago and that are in your mattress as well but the designs may be different from the designs they made years ago). I would keep in mind that the name of the manufacturer on a label has little to nothing to do with whether a specific mattress is suitable for you in terms of PPP. There is no “magic” in the name of the manufacturer because all manufacturers have access to the same or very similar materials and finding the specific mattress that is a good choice for you will always be the most important part of a mattress purchase regardless of who makes it.
The better options and possibilities I’m aware of in the Memphis area are listed in post #2 here.
Phoenix