Best UI: Breville
Best "normal" microwave: Panasonic inverter
Best for people who enjoy cooking: any microwave with convection/broiler (IIRC Miele speed ovens are popular)
Best for early adopters: Miele Dialog
Another comment mentioned commercial microwaves, especially larger ones with multiple magenetrons so need to spin. But they're loud. But easier to clean.
America's Test Kitchen did some testing and the Breville was their top pick:
* https://www.youtube.com/watch?v=_IRAi6Nzxbk
The Wirecutter has Panasonic and Toshiba, with Brevilles as an alternative:
* https://www.nytimes.com/wirecutter/reviews/best-microwave/
I have the Toshiba and am generally happy with it.
https://www.webstaurantstore.com/14351/commercial-microwaves...