Advice: constructing a latex/foam hybrid mattress

[quote=“Phoenix” post=34921]Hi Matt ress,

Outside of the general lack of knowledge in the mainstream part of the industry, part of the problem is that only you can know for certain which mattress or design is best for you. Nobody else can feel what you feel on a mattress. Post #2 here has some links to some generic information on the site that may be helpful but this is only generic and there are too many unknowns, variables, and personal preferences involved to use a formula, specs (either of a person or a mattress) or “theory at a distance” to choose a design that will work best for a specific person with any certainty.[/quote]

Maybe I am going about this the wrong way. I fully understand that only I am able to make a decision about what’s right for me, and I do have a good idea of what that is. What I am trying to get a sense of is what NOT to do.

I think we can agree that there is a wrong way to build a mattress.
I also think that we can agree that there are ways to build a mattress, with certain components, that are better than others.
And I don’t think anyone would argue that a mattress constructed in a way that could be prone to problems (ie: middle layer bottoming out against the support core because it’s too thin) is not the best mattress choice for me or anyone else for that matter.

What I am seeking here is advice from the experts on whether or not any components in the mattress could be adjusted to better reflect an optimal design, not whether or not this mattress is best for me. By providing information about myself I hoped that it might be easier for you to make a recommendation based on some narrowed down info about who’s sleeping on the mattress. Most of the people I’ve dealt with are sales people; not experts. People that can speak-to what they’ve been trained to say about “x” product, but look at me with a blank stare when I ask their about whether the 2nd layer of 2.0 lb 26 IFD HD foam should be 2" or 3" thick.

My biggest concerns are these:
Am I asking for trouble by choosing an 4" HD base at 32 IFD… Is this too “soft” to provide proper support in the base of my proposed design? Would increasing the density to 38 IFD create a propensity for the top layers to bottom at this point? Is there an argument to be made that there would be greater life expectancy, less tendency to bottom out, or any other positive attributes by designing it this way:
3" latex topper
3" 26 IFD HD foam
3" of 32 IFD or 38 IFD HD foam