Hi Maxxpower,
There is more about the pros and cons of one sided vs two sided mattresses in post #3 here. While a one sided mattress that meets the quality/durability guidelines here and that doesn’t have any lower quality materials or weak links can certainly make a durable choice … a two sided mattress would last longer than a similar mattress with a similar support system that used the same comfort layers on only one side of the mattress as long as you flip and rotate it on a regular basis (see post #2 here).
There is also more about the 3 most important parts of “value” of a mattress purchase in post #13 here 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 suitability, durability, and all the other parts of your personal value equation that are most important to you).
I would keep in mind that the first “rule” of mattress shopping is to always 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 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 if you can’t test a mattress in person then your own personal sleeping experience (see mattress firmness/comfort levels in post #2 here).
Outside of PPP … the most important part of the value of a mattress purchase is durability and the durability and useful life of a mattress depends on its construction and the type and quality of the materials inside it regardless of the name of the manufacturer on the label. That’s one of the reasons that It’s always refreshing to see a manufacturer like Clare Bedding that is transparent about all the materials and components in their mattresses and all of these mattresses use high quality and durable materials and there are no lower quality materials or weak links in any of them so if any or all of them are a good “match” for you in terms of PPP and all the other parts of your personal value equation that are important to you then they would certainly be well worth considering.
Wool is one of the best temperature regulating materials in the industry and while it will compress by about 30% of it’s thickness over time and the initial compression will be more where you sleep most on the mattress … with only an inch of wool this won’t have any meaningful effect on the comfort or support of the mattress and it will also even out over time as you sleep in different areas of the mattress and flip the mattress over on a regular basis so it’s certainly not something that I would have any concerns about.
Your own careful testing (hopefully using the testing guidelines in the tutorial) and personal experience will always be the most reliable way to know whether any mattress is a good “match” for you in terms of firmness, comfort, and PPP (Posture and alignment, Pressure relief, and your own Personal preferences).
There is also 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 in post #2 here that can help you assess and minimize the risks of making a choice that doesn’t turn out as well as you hoped for once you actually sleep on your mattress in “real life”.
While it’s not possible to quantify the sleeping temperature of a mattress for any particular person with any real accuracy because there are so many variables involved including the type of mattress protector and the sheets and bedding that you use (which in many cases can have just as significant an effect on temperature as the type of foam in a mattress) and on where you are in the “oven to iceberg” range and because there is no standardized testing for temperature regulation with different combinations of materials … there is more about the many variables that can affect the sleeping temperature of a mattress or sleeping system in post #2 here that can help you choose the types of materials and components that are most likely to keep you in a comfortable temperature range.
Wool is among the best temperature regulating materials and latex in general is the most breathable and temperature neutral of all the foam materials so it would be very unlikely that someone would have any temperature regulation issues with a mattress that has a wool quilted cotton cover and latex comfort layers.
The 2.5 lb polyfoam in the third mattress you linked is a very high quality and durable material which are well above the minimum guidelines that are suggested in the quality/durability guidelines here so there wouldn’t be any cause for concern or weak links in the mattress in terms of durability.
Phoenix