Hi needsleepMA,
The Nature is a great quality mattress that uses high quality materials but I certainly understand the difference between a mattress that someone “wants to like” and a mattress that actually works well in terms of PPP once you test it in a showroom. There can be a big difference
Jordans has all the specs of the Eco Sanctuary here so you wouldn’t need to take a picture. As you mentioned all the layers are good quality and there are no obvious weak links in the mattress but of course this doesn’t say anything about whether it would be a good match for you in terms of PPP.
I can’t feel what you feel or see you on the mattress so your own careful and objective testing using the testing guidelines in the tutorial post would put you in a better position to tell me about whether a mattress is a good match for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) than the other way around (see mattress firmness/comfort levels in post #2 here).
Having said that … with your weight and being a stomach sleeper (at leas partially) I would be cautious with a mattress that used 5" of softer materials (24 ILD or less) in the comfort layers which may be a little risky.
All the layers in a mattress will have an effect on all the other layers but the top layer of Dunlop and the wool together would reduce the “bounciness” or resilience that you would probably feel if you were sleeping directly on Talalay latex.
While the quilting will help keep the wool lofted … it’s normal that wool will compress and become a little firmer to some degree over time (it will generally compress about 30% of its thickness) but this is normal for wool. Because of the nature of wool it will still have resilience after it remains compressed and if you sleep on different parts of the mattress from time to time and rotate the mattress it will compress more evenly rather than just under where you normally sleep. The “nesting” of wool isn’t an issue for most people who like the feel of sleeping on thicker layers of wool (unlike foam materials where foam softening or visible impressions can result in the loss of comfort and/or support).
I don’t recommend any specific mattresses because that’s always an individual choice based on all the objective, subjective, and intangible parts of your personal value equation that are most important to you. The “value” of a mattress purchase also depends on what else is available to you and the other finalists you are comparing it to when you make your final choice.
The materials are all good quality but there are some cautions that I would be careful about with your weight and sleeping positions but if you can confirm with some certainty that it’s a good match for you with your stomach sleeping in particular then from a quality perspective I would certainly consider it as one of your finalists.
Based on the options you are considering I’m guessing you’ve seen this but just in case the Boston list is in post #2 here.
You can also check the Pure Latex Bliss retail store finder here which may also help you find a store within reasonable driving distance where you can try the Beautiful (although I would also be cautious with this because it also has thicker layers of softer latex in the comfort layer) as well as the Nutrition.
Phoenix