The Grace Digital one. It works, although Apple has ruined me and the user interface on the box is worse than that on a microwave. There's a long list of complaints about it, but there isn't much alternative.

The category is wide open for someone to make one where, say, the remote actually works more than some of the time. :-( I don't know why this is such a hard problem.

Which microwave? I have a hard time imagining ways it could be improved over what I have. Put food in, twist a knob to set time, microwave starts.

You probably own an old microwave, lucky you. Newer models usually have a digital interface with have various buttons - that's probably the non-intuitive interface the OP is referring to.

It's almost brand new, bought it last year. Samsung. IIRC they had models with analog and digital knobs but both function the same way.