Hi Jleo,
You can see my thoughts about an all latex mattress vs a latex polyfoam hybrid (generically and not specific to any manufacturer) in post #2 here.
Several of the manufacturers that are members of this site sell all latex mattresses online (see post #21 here) with various different designs, options, and prices. The Dreamfoam total latex mattress is listed here and it will soon be on their main site here as well.
Many of these would be roughly equivalent to “The Highlands” mattress (which has 6" of latex) and their topper (2" - 3" of latex in the comfort layer is the most popular latex mattress option).
Phoenix