My microwave is a 1977 Amanda Radarange. It can boil a cup of water in ⅕ of the time a modern microwave can.
Now granted, it has zero fancy settings and a simple number pad that does nothing but set how long you want the microwave to run.
But honestly, this simplicity is a large part of it’s charm. No connectivity needs, no features locked behind paywalls, no extraneous bullshit or never-used features. Just a tool that does only one thing, and does it exceptionally well.