Hi cassy13,
Both of these manufacturers are members of this site which means that I think highly of them and both use high quality materials so there would be no “weak links” in either of them in terms of durability. Once you are down to finalists that are choices between “good and good” that fit all your criteria and you are confident that both would be a good match for you in terms of PPP (or you are happy with the options you have after a purchase to exchange or return a mattress if you aren’t) and there are no clear winners between them, then your final choice will be a matter of “best judgement” based on your conversations with each of them and all the objective, subjective, and intangible parts of your personal value equation that are most important to you (see post #2 here). In terms of their quality/value I wouldn’t hesitate to purchase from either of them.
Phoenix