Hi Passat,
Both of these mattresses use high quality materials and there are no weak links in either mattress.
Of course how well a mattress matches your specific needs and preferences in terms of PPP and how it compares to your other finalists based on the parts of your personal value equation that are most important to you are important parts of the “value” of a mattress purchase so I would make sure you make some careful “value” comparisons but in terms of quality and durability they would certainly make good choices.
Phoenix