Hi jeffreyropp,
You are the only one that can feel what you feel on a mattress and there are too many unknowns, variables, and personal preferences involved to use a formula or for anyone to be able to predict or make a specific suggestion or recommendation about which mattress or combination of materials and components would be the best “match” for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) based on specs (either yours or a mattress) or “theory at a distance” that can possibly be more accurate than your own careful testing or personal experience … hopefully using the testing guidelines in the tutorial post (see mattress firmness/comfort levels in post #2 here).
The first place I would start your research is the mattress shopping tutorial here which includes the basic information, steps, and guidelines that can help you make the best possible choices … and know how and why to avoid the worst ones.
Two of the most important links in the tutorial that I would especially make sure you’ve read are post #2 here which has more about the different ways to choose a suitable mattress that is the best “match” for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) that can help you assess and minimize the risks of making a choice that doesn’t turn out as well as you hoped for that are involved in each of them and post #13 here which has more about the most important parts of the “value” of a mattress purchase which can help you make more meaningful quality/value comparisons between mattresses in terms of suitability, durability, and value.
When you reach step 3 in the tutorial then the better options or possibilities I’m aware of in and around the Greater Los Angeles area (subject to the quality/value guidelines I linked) are listed in post #2 here). You have some very good options available to you in the area.
If you are also considering online options then the tutorial also includes several links to lists of many of the better online options I’m aware of as well (in the optional online step).
Phoenix