Hi pievel,
I suspected that’s where you were based on the stores you mentioned so the list I linked includes the closest options or “possibilities” I’m aware of (as long as you can find out the “quality specs” you need to make an informed choice).
If you have spent more than an hour or two on this site and they “scoff” at you for asking about the quality specs of a mattress so you can confirm the type and quality of the materials inside it then it’s very likely that you may know more meaningful information about mattresses and mattress materials than they do and this is just a way to cover up their lack of knowledge by trying to tell you that “only engineers need that type of information” (or something similar) which of course is nonsense because engineers aren’t the only ones that want a durable mattress that will maintain its comfort and support for many years.
Yes they are one of the members of the site which means that I think highly of them. They have some very high quality mattresses but they are also in more premium price ranges (and I would always call any retailer you are considering visiting to make sure they carry mattresses on their floor that meet your criteria and budget) and none of them have any lower quality materials or weak links in their design. They are one of only three manufacturers in the country that makes latex mattresses whose factory has an organic certification (see post #2 here and post #2 here).
I don’t have any specific suggestions because I don’t keep a record of the specific mattresses that each retailer/manufacturer carries on their floor (keeping up with the specifics of all the mattresses on the showroom floors of all the retailers or manufacturers that are listed throughout the hundreds of forum lists would be a bigger job than anyone could keep up with in a constantly changing market) but checking the websites and making some preliminary phone calls to the retailers/manufacturers that are on the list is always a good idea before you visit any store because this will tell you which of them carry mattresses that would meet your specific criteria, are transparent about their materials (ask them if they will provide you with the information listed here about some or all of their mattresses and then only test the ones where they can provide this information), and carry the type of mattresses that you are interested in testing in the budget range you are comfortable with. These initial calls will also give you a good indication of the type of knowledge and service you are likely to encounter at the stores you plan to visit as well and can save you a significant amount of time and frustration compared with waiting to find out all the preliminary information until you actually visit them only to find out that they either can’t or won’t provide it.
Phoenix