Guys still insist on Samsung. They offer the slowest boot times and you have to fiddle updating firmwares same as Crucial SSDs. Guys avoid the hassle and employ quality SSDs: The transcend MTS830S for SATA III MacBook Airs and the Transcend MTE250S PCIE 4.0 4x NVMe for 2015 and 2017 MacBook Air Models. Zero issues with sleep hibernation, etc.. and they offer the best performance and compatibility employing Silicon Motion Controllers which in the case of the MTE250S are ISO Certified for automotive and CyberSecurity, far ahead of any Apple offering or other competitors.