Various (community discussion; references include Arizona Premium Mattresses / Saatva / others) DIY modular mattress (latex + pocket coil base with interchangeable toppers)
7/10
Community durability reports are strongest for latex-based modular mattresses where worn layers (topper) can be replaced instead of discarding the full mattress. Memory-foam builds are more often reported to develop sag and heat retention earlier, reducing BIFL confidence.
