As we are talking here about microSD card within Librem 5 might be that less could easily be better solution (but didn’t get there yet by myself to confirm my earlier thought):
This link: https://de.rs-online.com/web/p/micro-sd-karten/2034767 even think that is based on MLC NAND-Type, and they understand things related to SD cards much better than I do. And if some people often throw away their money for capacity rather than for quality, I cannot help there.