Hi NashMosby,
I believe that their private label line is manufactured for them by the local Therapedic licensee.
There is more about the most important parts of the “value” of a mattress purchase in post #13 here that can help you make more meaningful comparisons between mattresses.
While PPP (Posture and alignment, Pressure relief, and Personal preferences) and hiow well you sleep on a mattress is the most important part of “value”, in terms of durability a mattress (which will tell you how long you will sleep well) is only as good as its construction and the type and quality/durability of the materials inside it regardless of the name of the manufacturer on the label. In general terms … I would tend to avoid any mattress where you aren’t able to find out the type and quality/density of the materials inside them but the “S” brands in particular (see the list here) aren’t likely to provide you with the information you would need to make an informed choice and in most cases they tend to use lower quality materials in the top layers of their mattresses which are subject to premature foam softening and breakdown (see the guidelines here).
Since the name of the manufacturer isn’t particularly relevant, I would focus more on the type and quality of the materials in a mattress than on the name of the manufacturer that makes it so you can make sure that there are no lower quality materials or “weak links” in the mattress.
Unfortunately the specs you listed don’t contain any information about the quality/density of the materials inside them so I can’t make any meaningful comments about either mattress but if you can find out the information listed in this article and post it on the forum then I’d be happy to make some comments about the quality and durability of the materials inside them and the mattress as a whole.
Phoenix