Hi Adeline,
[quote]I have identified several models.
To give you our background: I am 175lb, my husband 250lb. I sleep pretty well, but he really likes a mattress that “craddles” him. If the mattress is too firm he gets back pain.
So from what I read in here, I understand that we need at least a 12inch mattress and at least 5lb memory foam due to my husband being on the heavier side. Is that correct?[/quote]
As you probably know from your reading here the first “rule” of mattress shopping is to remember that 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 that are unique to each person 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 or which type of mattress would be the best “match” for you in terms of “comfort” or PPP (Posture and alignment, Pressure relief, and your Personal preferences) or how a mattress will “feel” to you or compare to another mattress based on specs (either yours or a mattress) or “theory at a distance” that can possibly be more accurate than your own careful testing (hopefully using the testing guidelines in step 4 of the tutorial) or your own personal sleeping experience (see mattress firmness/comfort levels in post #2 here).
Two of the most important links in the tutorial that I would especially make sure you read 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” for you in terms of “comfort” and 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 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 (how well you will sleep), durability (how long you will sleep well), and the overall value of a mattress compared to your other finalists (based on all the parts of your personal value equation that are most important to you).
The thickness of a mattress is really just a side effect of the design and is also only one of many variables that can affect the feel and performance of a mattress and by itself also isn’t particularly meaningful (see post #2 here). In some cases higher weight ranges will sometimes do better with a mattress that is a little thicker than lower weight ranges but even this depends more on the specific design and combination of materials in the mattress and on how well the mattress “as a whole” matches your specific needs and preferences than anything else.
There is also more information in post #3 here and the posts it links to that would be helpful for those that are in higher weight ranges. While the process of how to choose a mattress would be the same … most people in higher weight ranges will generally need or prefer firmer mattresses (firmer materials will feel softer because you will sink into them more) and materials and components that are higher quality and more durable (the materials and components in a mattress will soften and break down faster for those in higher weight ranges than they will for someone that is in a lower weight range that doesn’t compress the mattress as much) so I would reduce or minimize the use of lower density materials that would be suitable for people that are in more “average” weight ranges (so if there are any they are only in thinner layers in the range of "about an inch or so) and focus more on higher quality/density and more durable materials (5 lb or higher memory foam, latex, or 2 lb or higher polyfoam) … especially in the comfort layers of a mattress which are more likely to soften or break down before the deeper layers or components in a mattress. Of course budget considerations can also be one of the trade-offs that are an important part of the “value” of a mattress purchase as well so there may be some people that are comfortable with choosing a mattress with lower density materials that won’t last as long because of the lower price.
You are looking at some good quality/value mattresses but they are very different from each other and while I can’t speak to how any mattress will “feel” for someone else because this is too subjective and relative to different body types, sleeping positions, and individual preferences, sensitivities, and circumstances … outside of PPP the most important part of the value of a mattress purchase is durability and assuming that the materials in a mattress you are considering are durable enough for your body type and budget range and meet the guidelines here … the choice between different types and combinations of materials and components or different types of mattresses (including innersprings) are more of a preference and a budget choice than a “better/worse” choice. I certainly wouldn’t assume that innerspring mattresses that use high quality and durable materials and that don’t have any “weak links” (in the comfort layers especially) are any less durable than any other type of mattress.
There is also more about the pros and cons of memory foam vs latex in post #2 here (or other more resilient materials to a lesser degree as well) but the best way to know which type or combination of materials or which type of mattresses you tend to prefer will be based on your own local testing or personal experience.
While your own careful testing or personal experience is the most reliable way to know whether a mattress is a good “match” for you in terms of comfort and PPP … when you can’t test a mattress in person then the most reliable source of guidance is always a more detailed phone conversation with a knowledgeable and experienced retailer or manufacturer that has your best interests at heart and who can help “talk you through” the specifics of their mattresses and the properties and “feel” of the materials they are using (fast or slow response, resilience, firmness etc) and the options they have available that may be the best “match” for you based on the information you provide them, any local testing you have done or mattresses you have slept on and liked or other mattresses you are considering that they are familiar with, and the “averages” of other customers that are similar to you. They will know more about “matching” their specific mattress designs and firmness levels to different body types, sleeping positions, and preferences (or to other mattresses that they are familiar with) than anyone else.
I or some of the more knowledgeable members of the site can certainly help you to narrow down your options, help you focus on better quality/value choices that are available to you either locally or online, help you identify any lower quality materials or weak links in a mattress you may be considering, act as a fact check, answer many of the specific questions you may have along the way that don’t involve what you will “feel” on a mattress, and help with “how” to choose but only you can decide which specific mattress, manufacturer, or combination of materials is “best for you” regardless of the name of the manufacturer on the label or whether anyone else has the same criteria or circumstances or would make the same choice.
Phoenix