Hi LLee,
They would certainly be well worth a phone call or a visit. They don’t make all latex mattresses as far as I know but they do make some mattresses that use latex in the comfort layers (see the first part of the page here).
There are two main parts to choosing a mattress. The first is the suitability of a mattress in terms of PPP and for this I would use careful and objective testing and avoid using specs or having any preconceptions about what may work best for you because the specs won’t tell you how well a mattress will feel and perform for you. The second is durability and this is where you need to know the specs so that you can confirm that a mattress that works well in terms of PPP doesn’t have any weak links and uses durable materials. In other words … specs won’t tell you anything about PPP and your testing won’t tell you anything about the durability of the mattress. Both would be an important part of choosing a mattress but they are separate issues that need to be evaluated separately.
Some of the other options or possibilities I’m aware of in the Houston area are listed in post #2 here. Restonic is a licensee group that includes many independently owned manufacturers across the country. I include retailers that carry them them in many lists for different cities around the country because the odds are higher that you will be able to find out what is inside the mattresses they make but this doesn’t mean that any specific mattress they make would be a good match for you in terms of PPP or durability or the other parts of your personal value equation that are important to you so you would need to make sure that any retailer you visit that carries them will be able to tell you the specifics of what is inside the models they carry (see this article).
The name of a manufacturer on a mattress is not nearly as important as whether a mattress is a good match for you in terms of PPP, that it uses high quality and durable materials relative to its price range, and that it compares well to your other finalists based on all the other parts of your personal value equation that are important to you. The steps are testing for PPP, checking for the quality/durability of the materials, and then comparing your finalist at each manufacturer or retailer for “value”.
Phoenix