2018-2019 MacBook Air vs 2020 M1 MacBook Air: Skip the butterfly keyboard years

The butterfly keyboards on 2018-2019 models will likely fail due to dust and crumbs, and Apple’s repair program only replaced them with the same flawed design. The 2020 M1 MacBook Air brought back the reliable scissor-switch keyboard and is a better deal overall. If buying used, either budget for a repair or skip those years entirely.