Hi Csj0952,
I can’t tell of your alignment from photos, as that could only truly be determined through noting actual landmarks and a true biomechanical strength, flexibility and preferred personal alignment. I would trust your initial impressions when trying out the products, and defer toward items that offer a firmer surface comfort because of your prone sleeping posture.
Between the two Nature’s Cloud mattresses the Firm would generally be analysis, and even this doesn’t take into account your level of muscular preferable to the Plush for your sleeping style. With the Pranasleep mattresses, you’d want to know all of the details about the layers inside for sake of comparison (type of latex and polyfoam in the quilt), and with the 3" in the quilt panel I could understand why you wouldn’t prefer this feel so much sleeping prone. Between the two Pure Talalay Bliss products (the Pamper is a 21 ILD for the upper 2" and 40 ILD for the support core), the Pamper would be much more appropriate for sleeping prone (The Beautiful doesn’t spec out with the 1" 50 ILD support stabilization base from PTB, so I don’t know if that is something the dealership had under the mattress or if you’re copying dated specifications, just FYI).
You’d want to know about the polyfoam in the quilt of the Pranasleep and I would have a concern over time about that with your sleeping posture and alignment sinking in a bit too much over time. A better solution would be the Pamper, with the possibility to add a topper over time, but I would make some very careful value equations about paying $800.00 for a 2" Talalay topper, and perhaps check with some of the site members here if you needed to make a topper purchase.
There certainly would be nothing wrong with the quality of the products from SleepEZ or Spindle (as you’re aware both are site members here and I think highly of them), but as you mentioned these would be products you’d be unable to try before purchasing, and that was a concern of yours. Both Talalay and Dunlop are quite breathable materials, but Talalay in general is more breathable than Dunlop.
As far as other things to try, it’s not possible to make specific suggestions or recommendations for either a mattress, manufacturers/retailers, or combinations of materials or components because the first “rule” of mattress shopping is to always remember that you are the only one that can feel what you feel on a mattress and there are too many unknowns, variables, and personal preferences involved that are unique to each person to use a formula or for anyone to be able to predict or make a specific suggestion or recommendation about which mattress or combination of materials and components or which type of mattress would be the best “match” for you in terms of “comfort”, firmness, or PPP (Posture and alignment, Pressure relief, and your own Personal preferences) or how a mattress will “feel” to you or compare to another mattress based on specs (either yours or a mattress), sleeping positions, health conditions, or “theory at a distance” that can possibly be more reliable than your own careful testing (hopefully using the testing guidelines in step 4 of the tutorial) or your own personal sleeping experience (see mattress firmness/comfort levels in post #2 here).
Phoenix