Hi slickvik,
I’ve certainly talked with both of them and I believe that they would both be well worth considering but the most important part of the “value” of a mattress purchase is how well you will sleep on it followed by how long you will sleep well followed by all the other parts of your personal value equation that are most important to you.
While I do recommend the members here “as a group” and I think highly of all of them … I don’t make specific suggestions or recommendations for either a mattress, manufacturers/retailers, or combinations of materials or components because the first “rule” of mattress shopping is to always remember that you are the only one that can feel what you feel on a mattress. There are also many other retailers/manufacturers throughout the industry that use good quality materials in their mattresses, are transparent about the type and quality of the materials they use, and make some good quality/value mattresses as well that aren’t members of the site (at least yet) that may also be well worth considering and I certainly wouldn’t hesitate to include other options in your research that aren’t members of the site if they compare well to the other finalists you are looking at.
I don’t have any personal experience with sleeping on either of their mattresses so I can’t speak to how either of them will feel even for me but even if I had … each person’s specific needs and preferences or their definition of “good value” can be very different and only you can feel what you feel on a mattress. A mattress that is “perfect” for one person can be completely unsuitable for someone else to sleep on even if they have a similar body type and there are just too many unknowns, variables, and personal preferences involved for anyone to be able to predict with any certainty how a mattress will “feel” or which mattress will be the best “match” for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) or any of your other personal preferences based on specs (either yours or a mattress) or "theory at a distance that can possibly be more reliable than your own personal testing … hopefully using the testing guidelines in the tutorial (see mattress firmness/comfort levels in post #2 here).
Outside of PPP the most important part of the value of a mattress is it’s durability and a mattress 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.
I don’t keep a record of the individual mattresses or the individual layers and components in each of them that the retailers and manufacturers in the hundreds of forum lists throughout the forum or the members here carry on their floor or have available (it would be a bigger job than anyone could keep up with in a constantly changing market) but if you can find out the information listed here about the layers and components in both of the mattresses you are considering and post it on the forum then I’d certainly be happy to help you compare them to the quality/durability guidelines here and let you know whether I can see any obvious weak links in either mattress that would affect the durability and useful life of the mattress. Without this information it’s not possible for me to make any meaningful comments about the quality or durability of any mattress.
Once you are confident that your finalists would all be a good match for you in terms of PPP (or you have good options after a purchase if you aren’t) and that there are no weak links in any of them in terms of durability and you have eliminated the all the worst options then you would be down to finalists that are comparing “good to good”. If there are no clear winners between them at this point (which is usually a good indication that you have done some very good research) then you are in the fortunate position that any of them would likely make a good quality/value choice and (post #2 here) can help you make a final choice based on your local testing or mattresses you have slept well on, your more detailed conversations with each of them, your confidence about PPP and the suitability of each one, their prices, your preferences, the options you have after a purchase to fine tune the mattress or exchange or return the mattress or individual layers, any additional extras that are part of each purchase, and on “informed best judgement” based on all the other objective, subjective, and intangible parts of your personal value equation that are most important to you. Sometimes the final choice may even come down to a matter of “gut feel” or “educated best judgement”.
Phoenix