Community-referenced (Arizona Premium Mattresses / SavvyRest / Saatva / Silk&Snow mentioned, but no single verified brand for the DIY system) DIY Modular Latex Mattress (latex base + interchangeable latex toppers, optional pocket coil base)
8/10
Community sentiment supports the DIY modular approach for long service life, primarily because damaged comfort layers can be replaced without replacing the whole mattress. Latex (especially as a base) is repeatedly described as holding shape for many years, while memory-foam mattresses are reported to sag and retain heat.
