Hi cprice88,
Austin Mattress is one of the options or possibilities that are listed on the Austin list here (which also includes the San Antonio list).
The Dallas list is here and includes some comments about Royal Sleep (City Mattress Factory) along with some of the other manufacturers and retailers there.
The Houston list is here.
In terms of quality/durability … a mattress is only as good as its construction and the quality of the materials inside it regardless of the name of the manufacturer on the label. Most manufacturers make a range of mattresses that range from lower quality and less durable choices to higher quality and more durable choices so the name of the manufacturer is less important than whether a mattress is a good “match” for you in terms of PPP and the quality and durability of the materials inside it. There is more about the most important parts of the “value” of a mattress purchase in the this post which I linked in a previous reply that can help you make more meaningful comparisons between mattresses but it comes down to testing for suitability, checking for durability, and then comparing your finalists for value based on the parts of your personal value equation that are most important to you.
Phoenix