Hi Adidas,
It’s been a while since you posted here … and welcome back
That’s a lot of questions so I’ll keep my replies to each of them brief. Some of them would be preference choices or “best judgement” choices rather than better/worse choices.
I know you’ve seen this before but just for reference the better options or possibilities I’m aware of in the Tampa area are listed in post #143 here.
There are different levels of organic certifications that include the raw materials, the latex cores, and the mattress as a whole (see post #3 here) but in terms of the latex cores or layers there would be very little difference between 100% natural Dunlop and 100% natural Dunlop that has an organic certification (see post #6 here). There is no organic Talalay but there is also 100% natural Talalay. All of the latex you are likely to encounter (either synthetic, natural or blended rubber made with either the Talalay or Dunlop process) would be certified by either OekoTex or EcoInstitut using the same or very similar testing protocols so by any objective standard would be “safe” materials.
There are too many unknowns, variables, and personal preferences involved to choose or recommend a mattress based on specs (either yours or a mattress) and the most effective way to choose the layers or components that are best for you are either your own careful and objective testing using the testing guidelines in the tutorial post or a more detailed conversation with a knowledgeable and experienced online manufacturer that has your best interests at heart and will know more about their own specific mattresses than anyone else (see mattress firmness/comfort levels in post #2 here). What works well for one person (even if their body type and sleeping positions are similar) may not work as well for another.
Yes … this would be a preference choice rather than a better/worse choice. There is more about the differences between them in post #7 here but the best way to know which one you prefer would be your own testing. It really does boil down to personal preferences since both types of latex can be used successfully in suitable firmness levels in either comfort or support layers.
More layers that can be rearranged or exchanged allow for more customization both before and after a purchase so it would have an advantage over a 2 layer mattress in terms of fine tuning or adjusting the feel or performance of a mattress if the extra degree of customization turned out to be necessary or desirable. There would would be little advantage if a two layer mattress was a either a good match for you or the degree or customization that was possible with less layers was “enough” for you.
There are many factors that are part of the “value” of a mattress purchase and each person’s criteria for value may be very different. The tutorial post includes a link to some of the members of the site that sell online (in post #21 here) that compete well with the best in the industry and many of them make or sell latex mattresses with a wide range of options, features, types of latex, and price ranges. Which of them is the best value for you would depend on which one you believe would be the best match for you in terms of PPP and all the parts of your personal value equation that are most important to you.
Yes … SleepEz offers blended Talalay, 100% natural Talalay, and 100% natural Dunlop in different combinations and choices of firmness levels and covers (quilted or unquilted depending on the model you are considering). They would be directly comparable to any other manufacturer that used the same types and blends of latex.
I’m not sure which posts you are referring to but their sources for Talalay include the only two manufacturers of Talalay latex in the western world (Radium or Latex International) and their source for their 100% natural Dunlop is Latex Green which is high quality manufacturer of 100% natural Dunlop that would be the equivalent of other reputable manufacturers of 100% natural Dunlop.
They have different covers depending on the model of their mattress that you choose but they are all high quality covers. They would be comparable to other high quality similar covers used by other manufacturers although there will always be some differences between the covers they use and the covers used by other manufacturers. You can see some comparisons here and here for example about SleepEz’s wool quilted cover and the Savvy Rest wool quilted cover. I believe Savvy rest uses a heavier cotton twill in their ticks which is very high quality but is a little thicker and stiffer and may take a little longer to break in.
While latex in general is the most breathable and most temperature regulating of all the foam categories and memory foam in general is the least (and is generally the type of foam where there will be more comments about sleeping warm) … any foam material can insulate to some degree and sleep warmer than natural fibers (which are more breathable than any type of foam). Whether any mattress sleeps warm for a particular person would would depend many factors (including the person themselves) including the softness of the latex (how much you sink into the mattress), the type of cover and quilting materials over the latex, the type of mattress protector you are using, and the type of sheets and bedding on the mattress. There is more in post #2 here about the factors which in combination with each other can affect temperature regulation. In most cases, sleeping too warm is not an issue for most people with a latex mattress.
I think most people seem to agree that they would be reasonable approximations of each other yes. You can see the rough ILD range that Savvy Rest uses in post #2 here (this was when they were using Talalay from Latex International but it would likely be similar to what they are currently using from Radium). They have firm, medium, and soft layers and SleepEz has X-firm, firm, medium, and soft.
I don’t know the specifics of how they compare based on any personal experience but the SleepEz foundation would certainly be a suitable choice for a heavy all latex mattress and has spaces between the slats that are less than 3". There is more about foundations in the foundation post here.
While they are certainly there to sell mattresses … the “best” salespeople will educate and inform more than “sell” and will put your best interests above their profit. In most cases they will also be able to provide more accurate and specific information about their mattresses than anyone else.
Phoenix