Hi Nene1957,
I would always keep in mind that in terms of durability a mattress is only as good as the type and quality of the materials inside it regardless of the name of the manufacturer on the label so I would always make sure that you can find out the information listed here about any mattress you are considering so you can compare the materials and components in the mattress to the quality/durability guidelines here to make sure there are no lower quality materials or weak links in any mattress you are considering. You will often find that some mattresses that are made by a manufacturer may use some lower quality materials that would be a “weak link” in the mattress while others may not and would be worth considering.
The better options or possibilities I’m aware of in and around the Spokane and Coeur d’Alene areas (subject to making sure that any mattress you are considering meets the quality/value guidelines here) are listed in post #4 here.
Phoenix