Hi paperman,
Talalay is blended - 30% Natural & rest is synthetic - supplied by Latex International: This would be the “standard” Talalay blend and is a high quality and durable material (it would probably be a little more durable than 1005 natural Talalay).
Polyfoam core - density is 5 LBS This is almost certainly wrong and is in the density range you would normally find in memory foam … not polyfoam (see my comments in post #17 here)
The 2.2 lb polyfoam (Soy bio foam) support layer is a good quality/density material but the support layer isn’t generally the weak link of a mattress.
I would want to know the density of the other polyfoam layers because there’s more than “about an inch or so” (there is 3 1/2" in the upper layers) which means that they could become a weak link in the mattress if they are in a lower quality/density range. The latex would be a good quality material but I would also want to know the type and blend of the latex.
You can read more about the different types and blends of latex in post #6 here.
I don’t pay too much attention to mattress reviews … especially if there are just a few (see post #13 here) because they don’t include the specifics of the mattress or the other parts of the sleeping system or their personal circumstances that could be the cause of any issues they are experiencing. All manufacturers have access to the same materials so I would be much more interested in knowing the quality of the materials inside the mattress. Almost every manufacturer will have some negative reviews … justified or not … and if you went by this there would be very few if any manufacturers left to purchase from.
Phoenix