Hi carole,
Unfortunately, most of the larger manufacturers have little interest in providing good information about the contents or layering of their mattresses … either old models or new models. It would make meaningful comparison shopping based on “apples to apples” comparisons with other mattresses with similar materials far too easy, the relative “value” of the mattresses they produce would become very clear, and the “marketing stories” that they rely on would become much less effective.
I’m looking forward to hearing about your conversation with Chuck … and hopefully your choice is exactly what you need and matches your rather difficult circumstances.
As in so many things … the key is always in finding the right balance … in this case between the softness and thickness of your comfort layers and the firmness of the support layers below them. The comfort layers need to be soft and thick enough to “allow” you to sink in enough for good pressure relief while the comfort layers also need to be thin enough so that the heavier parts of your body (like the hips/pelvis) are can be “stopped” by the firmer support layers before they sink down too far to provide neutral spinal alignment.
Just in case you didn’t see this … they also have a Eurotop mattress where the comfort layer can be exchanged so if for any reason your choice doesn’t turn out quite right you can exchange it for a low cost for a different firmness level. Some of its benefits and the details of how the exchange works are in post #2 here.
Phoenix