Hi PAFred,
It would have a slight zoning affect but they will be able to provide you with more specifics. I mentioned it because it would be a closer “value” comparison to the Spindle that you were also considering.
The deeper layers of the mattress are where the zoning would be most important as far as alignment is concerned.
There is more about primary or “deep” support and secondary or “surface” support and their relationship to firmness and pressure relief and the “roles” of different layers in a mattress in post #2 here and in post #4 here that may also be helpful in clarifying the difference between “support/alignment” and “pressure relief” and “feel”.
Phoenix