Hi Sark,
I think highly of both manufacturers but the name of the brand isn’t really important and the only way to make meaningful comparisons between mattresses is based on the specifics of the design and the materials in each mattress you are considering. If you talk to each of them they will be able to provide you with more information that can help you compare them. While both of them are very knowledgeable about the materials they use and would be the best source of information about their mattresses … if you list the specifics of your “finalist” for each manufacturer on the forum after you have talked with them (see this article) I’d also be happy to make some comments about the materials in each one and the mattresses in general.
Latex is the most durable of all the foam materials and would be more contouring and softer than natural fibers without any foam although this will also depend on how all the materials and layers in each mattress interact with each other.
Neither one has any weak links or lower quality materials in the design and if these were your final choices then you would be comparing “good to good” and you certainly wouldn’t be making a mistake regardless of which one you preferred or ended up buying.
Phoenix