Hi KittyKat,
While they are very different mattresses so they aren’t really an apples to apples comparison … from strictly a durability point of view (regardless of any differences between how each one feels in terms of PPP or the options they provide both before and after a purchase) both types of latex are very durable materials and they would be closely comparable and neither one has any “weak links”. Having said that … there is more about all the many other variables that can affect durability and the useful life of a mattress relative to each person in post #4 here and the posts it links to because there are also other variables besides just the materials themselves that can affect the durability and useful life of a mattress.
Phoenix