Hi motor58,
I would need to know the density of the polyfoam. You can see the minimum density guidelines I would suggest in post #4 here but as far as I know they don’t use any “cheap” or low quality materials in their mattresses.
Tim is the owner of http://www.eastsidemattress.com/default.asp but works in partnership with Nick at http://slumberease.com/ . Slumber Ease is the factory and the showroom for both in Marysville. If you call the number on the East Side website you would be talking with Tim and if you go to the factory showroom in Marysville or call the number on the Slumber Ease website you would be talking with Nick (or one of his staff). Both of them are very knowledgeable about mattresses and are committed to educating their customers and helping them to make the best possible choices. While it depends to some degree on the specifics of the foam or latex you are comparing … generally latex is a more costly material than even high quality polyfoam.
That would depend on what you mean by “help”. A flexible slat system or a box spring under a mattress performs a different function than adding to the foam layers in a mattress. Whether any sleeping system is suitable for you depends on the specifics of the design. Generalities aren’t usually helpful when it comes to predicting how a combination of components and materials will work for you and the best way to know would be to test the combination in person.
I’m not sure what you are asking. A mattress needs a good support system underneath it regardless of the quality of the foam and a more breathable support system is generally preferable to one that doesn’t allow for any airflow under the mattress. What is under the mattress performs a different function than the mattress itself.
I’ve also changed the description in the Seattle list to make it clear that Slumber Ease and Eastside Mattress are two different businesses with two different owners that work together and share the same factory and showroom.
Phoenix