Multiple (community discusses Arizona Premium Mattresses / SavvyRest-style modular builds) DIY modular latex mattress (latex base + replaceable toppers)
8/10
Community sentiment is that modular latex mattress builds can last for many years, with sag typically localized to top layers. Longevity is repeatedly attributed to latex durability and the ability to replace only the comfort layer instead of the entire mattress, though some users report heat/firmness issues and layer replacement still being necessary.
