Hi pinoyski,
Unfortunately the information you listed doesn’t say anything about the specifics of the mattress or the quality of the materials inside it. All it does is list the type of materials based on weight and all materials (including polyfoam and memory foam) come in higher and lower quality versions. While there are many low quality and “cheap” mattresses that are made in China … there are also some higher quality mattresses as well. There is always more uncertainty and risk involved when you are considering a mattress made in China (see post #6 here) but I would need all the information listed in this article to be able to make any meaningful comments about the quality and durability of the materials in any mattress or the mattress as a whole.
There is also more about the most important parts of the “value” of a mattress purchase in post #13 here that can help you make more meaningful comparisons between mattresses.
Unfortunately it’s not possible to “diagnose” the reasons for any particular person’s back pain on a forum (it would be like a doctor trying to diagnose any health issue without being able to see you or assess you in person) or the extent to which it may be caused by the mattress or by the condition of your back … it’s very likely that your mattress reached the end of its useful lifetime some time ago relative to your specific needs and preferences and either wasn’t a suitable choice in the first place in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) or used lower quality materials that resulted in the premature softening or breakdown of the foam fairly rapidly and the loss of comfort/support that goes with it.
Having said that … if you find that you have “symptoms” (back pain etc) when you wake up in the morning and they go away soon after you move around and stretch or if sleeping on different mattresses leads to better quality and “symptom free” sleep then it’s much more likely that the primary cause of your “symptoms” are your mattress and it’s time to replace it (see post #3 here)
If you are interested in the more complex information that can help you with the detective work that can be involved (even though you are replacing it and it won’t be as relevant for choosing a different mattress) … there is more about the more common “symptoms” that people can experience on a mattress and some of the most likely reasons for them in post #2 here and the posts it links to.
Post #2 here and post #4 here has more information about primary or “deep” support and secondary or “surface” support and their relationship to each other and to firmness and pressure relief and the “roles” of different layers in a mattress that may be helpful in clarifying the reasons for your symptoms as well.
I would keep in mind that the type of materials and components in a mattress are a preference choice … not a “better worse” choice. The suitability of a mattress in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) is more closely related to the specific design of a mattress … not the type of materials inside it. Any type of materials can be used to build a mattress that can be a good match for a specific person in terms of PPP if it has the right design.
I would tend to avoid trying to predict which type of mattress may be best for you ahead of time based on specs or “theory” because there are far to many unknowns and variables involved. There is more about the different ways to choose the most suitable mattress (either online or locally) and how to identify and minimize the risks involved with each of them in post #2 here but deciding on which mattress will be the best “match” for you in terms of PPP will really come down to careful and objective testing (locally) or a more detailed conversation on the phone with an online retailer or manufacturer.
While zoning can certainly be an effective approach with more “challenging” body types or circumstances … specific zoning patterns can either be helpful or detrimental depending on how well the specific zoning and design of the mattress “matches” the person or people sleeping on the mattress. There is more about zoning post #11 here and the posts it links to. Zoning may be less “necessary” with latex (see post #7 here).
I don’t recommend any specific manufacturers or mattresses and while I do think highly of Select A Bed … there are not a member of the site which are the only manufacturers and retailers that I “recommend” as a group (not as a specific choice).
I also think very highly of both Flexus Comfort and SleepEZ of course who are both members of this site.
I would take some time and not rush a decision that will have a more significant effect the quality of your sleep (and waking hours as well) over the next decade or longer than almost anything else you will buy in the same time. Rushed buying choices are one of the most significant causes of buyers remorse much too quickly after a purchase.
I also wouldn’t get overly involved with specs or “theory” or more technical information which can often lead to information overload and “paralysis by analysis”. While too little information can lead to poor choices … too much information or a tendency to overemphasize “specs” or “theory” that has little meaning to you in your own personal experience can be just as likely to lead to poor choices as well. You need “just enough” information to recognize the retailers or manufacturers that already know what you would otherwise need to learn. In the simplest terms … once you have decided on which retailers or manufacturers you would prefer to deal with or visit (step 3 in the tutorial) … your choice will really come down to …
1. Testing a mattress for PPP (or a more detailed phone conversation if you can’t test a mattress in person).
2. Checking to make sure there are no lower quality materials or weak links in a mattress you are considering.
3. Comparing your finalists for “value” based on all the parts of your personal value equation that are most important to you.
Phoenix