Multiple brands / DIY components Mattress (DIY/build-your-own modular mattress)
8/10
Community sentiment favors modular DIY mattresses using latex and/or pocket coils because damaged layers can be replaced instead of replacing the whole mattress. Several commenters report multi-year to near-decade longevity, but there are also reports of heat retention and some layer-specific failures (sagging/softening) prompting replacements.
