Hi olivetorpedo,
I would need to know the specifics of the materials inside the mattress to make any meaningful comments about it. Outside of making sure a mattress is a good match for you in terms of PPP (using the testing guidelines), the most important part of knowing whether a mattress has any obvious weak links or making meaningful comparisons to other mattresses is by knowing what is inside it (the information you need is in this article). If you can find out the specifics of the mattress you are considering then I’d be happy to make some comments about it.
Bed Boss itself uses memory foam that is sourced in China but they are CertiPur certified (see here*) so as long as the mattress you are considering uses 4 or 5 lb memory foams or higher (depending on your weight and the guidelines here) then they would be well worth considering as one of your finalists. The Bed Boss itself tends to be transparent about the materials they use which is one of the reasons I list them as a “possibility” in various lists around the forum.
ADMIN NOTE: *Removed 404 link|Archived Footprint: certipur.us/pages/for-consumers/find-products/
Enso is also CertiPur certified but they also tend to use lower density/quality memory foams that are under 4 lbs so I would make sure you know the specifics inside any of them you are considering before making the purchase no matter how they feel in a showroom so that you can make sure that there are no weak links in the mattress.
Unless you are able to find out the specifics of what is inside a mattress you are considering … I would avoid it because the risk of making a “blind purchase” would be too high in terms of the quality or durability of the mattress.
Phoenix