Hi 1jmpshot,
There are some other choices in the general Atlanta area in post #2 here that may be better choices if you are looking at the OMF innerspring/polyfoam mattresses.
While OMF tends towards better value in any particular price range … they are not your only better option in the area and I would not consider buying a mattress where I didn’t know the density of the polyfoam in the comfort layers … and this would especially be true with a thicker pillowtop.
With a thinner comfort layer … lower density foam (say 1.5 lb) would hold up fairly well in a two sided mattress (although there are also many other variables involved in durability as well) but when this layer is thicker like in a pillowtop … the softening that will happen can make a much bigger difference and would be much riskier.
So I would check to find out the thickness and density of the polyfoam and I would be cautious if it was 1.5 lbs or less in a pillowtop and make some careful comparisons to other mattresses that are available to you that use higher density foam. If it was 1.8 lb or better … then I would breath a little easier (although this is still not in the durability range of latex). Of course all of this is also budget dependent because better quality/durability polyfoam is also more costly.
You are in an area that you can make some good value comparisons once you have the details of the layering in the OMF pillowtop.
Phoenix