Hi Michael90,
There is more about the most important parts of the value of a mattress purchase in post #13 here that can help you make more meaningful comparisons between mattresses.
The Eco Series 2 is a memory foam mattress and the other two are latex mattresses so the first thing I would do to narrow down your choices is decide on which material you would prefer. There is more about how memory foam compares to latex in post #2 here.
I terms of suitability …
If careful and objective testing indicated that you are in good alignment in all your sleeping positions then this would mean that the support is a good match for you because the most important part of PPP (Posture and alignment, Pressure relief, and Personal preferences) is good alignment. There is more about primary and secondary support and their relationship to pressure relief and firmness in post #4 here and in post #2 here.
If the tucker mattress is just a 6" layer of 40 ILD latex then I would make sure you do some careful testing on the mattress (using the testing guidelines in the tutorial post) because this would be firmer than most side sleepers would do well with.
The same would be true for the Pamper which is the firmest mattress in their all latex lineup and it may also be too firm for most side sleepers.
Having said that … if a mattress turns out to be too firm for you when you sleep on it then you can always add additional comfort and pressure relief with a topper but choosing a topper that you can’t test on a specific mattress before a purchase can be somewhat uncertain or risky and in some cases can be almost as difficult as choosing a mattress in the first place.
In terms of durability …
I don’t know the specifics of the materials in the Tucker mattress so I can’t make any specific comments about either of them (unless you can find out the information listed here and post it on the forum in which case I’d be happy to make some comments about the materials inside it).
If you can confirm that the specs listed in post #2 here are correct (and I would want to know the density of the polyfoam support core as well) … then there would be no weak links in the mattress.
The Pamper uses 8" of blended Talalay latex so there would be no weak links in this mattress either.
In terms of value …
Once you have confirmed that all the mattresses you are considering are suitable for you in terms of PPP and that there are no weak links in the designs and you are down to finalists that are between “good and good” … if there are no clear winners between them then your final choice (see post #2 here) would be a matter of “best judgement” based on all the objective, subjective, and intangible parts of your personal value equation that are most important to you (including the price of course along with the options you have after a purchase to make changes to a mattress or to exchange or return it).
Phoenix