Hi Bryce720,
The Natural Escape already includes a wool quilted cover and adding more wool probably won’t have as significant an effect on the firmness of the mattress as adding another inch of softer latex (either Talalay or Dunlop) or using a softer latex comfort layer (again either Talalay or Dunlop).
I would keep in mind that both Talalay and Dunlop come in a wide range of firmness levels (ILD’s) so either one can feel firmer than the other one depending on the specific firmness of the layer. If they are both “rated” as the same ILD then for most people Talalay would probably feel softer than the Dunlop. Talalay will also have a different and more resilient “feel” than Dunlop. There is more about some of the general differences between Talalay and Dunlop in post #7 here but the choice between them would be a preference choice rather than a “better/worse” choice and the only reliable way to know which type or blend of latex you tend to prefer will be based on your own personal experience.
I haven’t slept on any of their mattresses so I don’t know any of them would feel for me but even if I had what works well for me or different combinations of materials and components that I would tend to prefer and my own personal experience on a mattress or what I would consider to be soft or firm may be very different from your own. Again … they will be your best source of guidance and will know more about their own mattresses and how any of the custom options that you are considering may feel for someone else based on their years of direct experience and on the “averages” of other customers that may be similar to you than anyone else (including me).
Phoenix