Hi Bftiedt,
Both of these mattresses would at least be easier to “come somewhat close to” because they have a more simple construction. In both cases … they have “about” 3" of memory foam over a thicker base layer of polyfoam. In both cases the memory foam is “in the range” of 4 lbs and the base polyfoam is in the range of 1.5 lbs.
While there are still many variations of memory foam (either with or without gel) … and the variables of the differences between different foams can’t be taken into account and the firmness of the polyfoam layers underneath the memory foam may also be very different (and this has a significant effect on how a memory foam mattress feels) … at least the odds of “somewhat” matching a mattress with a similar layering based on more general descriptions is a little higher.
Post #7 here has a list of some of the better Nashville possibilities that I’m aware of. I would call them and say something along the lines of …
I’m looking for a lower cost memory foam mattress that has about 3" of 4 lb memory foam or better over a good quality polyfoam base layer (preferable 1.8 lb density or better) and that sleeps relatively cool, has a somewhat firmer feel, and is in the $500 - $700 budget range. Do you have anything similar to this that I can test.
If they say yes then the next step would be to ask the name and model of the mattress they believe would “fit” your description (so you can confirm that they are not just trying to get you in the store and don’t really have a mattress that fits your description).
If this conversation is promising … then I would go there and test the mattress to see how well it meets your needs and preferences.
Phoenix