Hi Talkoran,
When you talk with them on the phone they will be able to tell you which of their mattress layering combinations would be most closely comparable to the Savvy Rest combination that you confirmed was the best “match” for you in terms of comfort, firmness, and PPP or if you aren’t certain about which layering combination to choose then I would go with the combination that they suggest which would have the best odds of success based on their experience and the “averages” of other people that are similar to you in terms of body type, sleeping style, and preferences. Don’t forget that with a component mattress you have options to rearrange layers or exchange a layer if your initial combination doesn’t work out as well as you hope for.
Outside of price the main differences in the type of materials and components will be the type or blend of latex that you choose or that they have available for each layer, some relatively minor differences in the cover and quilting, and differences in their return and exchange policies.
I don’t believe that either Sleeping Organic or SleepEZ uses CoCo latex as their supplier but the manufacturer of the latex isn’t as important as the type and blend of the latex anyway. If the type and blend of the latex is the same then the latex made by different manufacturers will be closely comparable in terms of quality and durability. Mattress manufacturers will sometimes even switch their suppliers based on changing market conditions. There is more about the different types and blends of latex in post #6 here and there is more about some of the general differences between Dunlop and Talalay in post #7 here but the choice between different types and blends of latex is more of a preference and budget choice than a “better/worse” choice because any type of blend of latex is a high quality and durable material relative to other types of foam materials.
Most (although certainly not all) people that are looking for “organic” materials are usually concerned more with purchasing more natural materials and/or with “safety” than whether the latex or other components have an organic certification. There is more information about the three different levels of organic certifications in post #2 here and some of the benefits of an organic certification in post #3 here and there is more about the different types of organic and safety certifications in post #2 here and more about some of the differences between organic and safety certifications in post #2 here that can help you decide whether an organic certification is important to you for environmental, social, or personal reasons or whether natural materials with a “safety” certification is enough.
There is more about some of the factors that can affect the price of a mattress relative to different manufacturers or retailers in post #14 here but Savvy Rest is somewhat of an “outlier” in terms of their cost and “value” compared to most of the online and many local manufacturers that sell component latex mattresses with the same type and blend of latex and that have a similar design.
Once you have narrowed down your options to a list of finalists that are all choices between “good and good” (which you have) and none of them have any lower quality materials or “weak links” in their design (which they don’t) and if at this point there are no clear winners between them (which is usually a good indication that you have done some good research) then you are in the fortunate position that any of them would likely be a suitable choice and post #2 here can help you make a final choice based on your more detailed phone conversations about each of them, the firmness and suitability of each one, their prices, your preferences for different types of materials and components or types and blends of latex, the options you have after a purchase to fine tune the mattress or exchange or return the mattress or individual layers and any costs involved, any additional extras that are part of each purchase, and on “informed best judgement” based on all the other objective, subjective, and intangible parts of your personal value equation that are most important to you.
Phoenix