Hi pvanheuklom,
Once you have eliminated all the worst choices and are making choices between good and good (and all of these are “best in the country” value) then it’s time for me to step out of the way because there aren’t any more 'better or worse" choices any more and deciding on which one has the objective, subjective, and intangible preferences that best matches your own “personal value equation” is the only way to decide between them.
I would of course make sure that you have talked with each of them so that you are choosing between “final choices” at each one and then one by one make all the difficult choices and tradeoffs that are part of the differences between each mattress and the options offered by each manufacturer that are most important to you.
A few comments that may help …
This is true in the lower ILD’s of Talalay but once you are in the mid 20’s or so then the difference between them would be greatly diminished and with Dunlop it’s the other way around. You can read a little more about all the different types of latex in this article and in post #6 here. Each of these has a different “feel” but they are both high quality materials and the choice would be a preference rather than a “better worse” one.
Post #14 here has some of the options available in and around the Springfield, IL area and some of these carry all latex or mostly latex mattresses that may be useful for local testing to help you narrow down your choices.
Because of all the variables involved and because there is no “formula” that can turn height, weight, and sleeping position information into a specific recommendation that can take into account all the possible differences between people … the “best” way to decide on the combination of materials and layering that may work best for you is either through personal testing or by using the specific suggestions of each manufacturer (which may differ from each other because of differences in their materials, components, options, or designs) based on the “averages” of people that have similar body types and sleeping styles.
I’m looking forward to hearing about what you decide on.
Phoenix