Hi bobfrog,
The places I know that make or sell all latex mattresses in the Louisville list are Bandy Bedding, Weekend outlet, and Healthy back and of course some of the others make either mostly latex (like Denver nmattress) or latex hybrids.
Ken was one of the original members and I have had many lengthy conversations with him. When it comes to latex he is one of the most knowledgeable and open people I know and he is also very well informed about the industry. He will give you accurate information … even if it costs him a sale … which is one of the reasons (besides quality and value) that he was one of the first I invited to become a member. He also has some of the lowest prices for all latex mattresses available.
Convoluted latex (or any material) only has less material to support the same body weight so it can never be as durable as a full layer of the same density or ILD. While it does have certain performance properties and advantages which is why it’s used … it can reduce durability although this would be less of an issue with more durable materials such as latex. It’s also less expensive than a full layer (you can make two convoluted layers out of one full layer).
Hope this helps.
Phoenix