Hi tatanka,
I would need to know more specifics about the costs involved in each choice and the details of the layers in the Prana to make a meaningful comparison.
If you can find out the layer by layer specs of the Prana (including the density of the top polyfoam layer as they are currently making it) and can provide the cost to you of each option and also provide specific feedback about your testing experiences on each mattress in terms of PPP (Pressure relief, Posture and alignment, and Personal preferences) and which one you preferred in each part of your testing along with any other criteria that is important to you in your choice (see post #46 here about your personal value equation) then I would be in a much better position to tell you which direction I would lean if I was in your shoes or at least some thoughts about the tradeoffs that would be most important to me if I was forced to make a choice between them.
Without the additional information I really don’t have a frame of reference to provide any thoughts or feedback that would be meaningful.
Phoenix