SD card performance (in my experience with Pi Zero) is important.
More than you wanted to know!
https://en.wikipedia.org/wiki/SD_card#Speed
More analysis than you want to know
https://elinux.org/RPi_SD_cards and http://www.pidramble.com/wiki/benchmarks/microsd-cards
Too many choices. I go with a well known memory manufacture like Kingston, PNY SanDIsk and check the analysis.
Write the card with https://www.balena.io/etcher/ it is easy (takes gz) safe(finds SD card) and free