Hi Djehuty,
Not at all … but my comments will be more generic in nature because they know much more about the specifics of their mattresses than I do. I would never purchase a mattress online based on email communications and I believe that a more detailed conversation on the phone is an essential part of the process. Email is good for very simple questions that have “black and white” or “single sentence” answers but these are not the norm in the world of mattresses where most questions have an “it depends” in the answer and voice communications can help you with more detailed or nuanced questions that you may not realize even need to be asked or that can’t be effectively dealt with through email conversations.
Latex is more durable than polyfoam but the weak link of a mattress isn’t normally in the support layers anyway so both of them will be durable choices and the other differences between them may be more important factors in your choice. You can read more about the relative durability of a mattress and the combination of many factors that can affect its useful life post #4 here. You can also read more about some of the differences between an all latex mattress and a latex/polyfoam hybrid in post #2 here.
I’m not so sure there are no confirmed cases and it would also depend on the type of latex allergy you are referring to. There is more about latex allergies in post #2 here but for the vast majority of consumers latex “allergies” (or more accurately latex sensitivities that are connected with gloves, condoms, balloons or other types of rubber that you come in contact with) are not an issue with mattresses. For someone who had a true type 1 latex allergy I would avoid natural latex but this is very rare.
You can read more about the smell of latex in post #2 here but all latex you are likely to encounter in north America has been tested to OekoTex standards for harmful VOC’s and substances in the mattress.
Latex pillows would be the same as mattresses and again would depend on the type of allergy.
That depends on the thickness of the reflex layer but if it’s in the range of an inch or less and only there for the surface feel of the mattress then it won’t have any significant effect on the useful life of a mattress. Once any polyfoam in the upper layers is in the range of 2" or more then I would want to make sure that the density of the polyfoam was high enough to prevent early softening or breakdown (the durability of polyfoam depends on the density used). Most quilting foam is quite breathable although it won’t regulate temperature as well as wool or other natural fibers. There is more about the many factors that can contribute to temperature regulation in post #2 here.
This depends on the specifics and on he mattress you are referring to. Layer exchanges don’t need to be compressed and can be exchanged through courier. Complete mattresses however require shipping with a common carrier (truck freight). For the mattresses that have a free return they look after the common carrier freight charges. For the ones where you pay for return shipping the return would be more costly but they will help you find the best or least costly option for a return. For this type of question they are a much better source of information than I am and I would suggest a phone call with them (so they can deal with the specifics of each of their mattresses).
Thanks for your questions and kind comments as well … I appreciate it
Phoenix