I found almost every one of them has "express" buttons, basically just smashing start adds one or half a minute.
I so far found one microwave oven that required the whole ritual each and every time. It was so bad I forgot to set it to max time, so we can just pause it and resume it (like cheap kitchens that abuse consumer-grade microwaves do) - though maybe it was so bad there wasn't resume. So if you opened the door before it thought it was time, you had to set it up again. ¯\_(ツ)_/¯
The '+30' button is all that I ever use, which makes me think dials are probably better. A dial would be simpler, one quick turn instead of several button presses. I can't say I was previously annoyed with my microwave, but now I don't think I'll look at it the same again.
I thought that too. Dials were more irritating because you had to move it juuuuusst right to get the time you wanted. It didn't help that it had acceleration, and that as you got higher it used bigger increments.
The best UX I've ever experienced on microwaves are restaurant microwaves and Danby microwaves.
Restaurant microwaves have programmable buttons and a space beside them to write what time is programmed in (or what recipe it is for). If you want a different time than the preprogrammed ones, then you press a time button and then punch in your time.
Danby's work similarly, you press a digit and you get that many minutes and it starts immediately. You press the +30sec and it adds 30 seconds. Simple, efficient, discoverable. Admittedly anything beyond the basics is a bit of a train wreck, but I'm okay pressing 1 instead of punching in 50 or 55 and then start when I want a bit less than one minute.
My current microwave only starts when you press start. The +30sec button will save you at MOST 1 button press ever, unless you want to add 30s to an already running microwave, which is more than I can say for my last rotary, where +1min would only work if you used it to start the microwave. If you used the dial, it didn't work.
Appliances have TERRIBLE UX, and I could go on about the good and bad things I have seen and been frustrated by.
I had a microwave that upon finishing would show the message "GOOD". I guess it was a bad translation of "done". It also always had to beep three times at ear piercing volume, even if you opened the door after the first beep.
Oddly, I think that's a regional thing. Here in Belgium, every microwave I ever used had a dial (digital or mechanical) and most models in the stores are dial based
I so far found one microwave oven that required the whole ritual each and every time. It was so bad I forgot to set it to max time, so we can just pause it and resume it (like cheap kitchens that abuse consumer-grade microwaves do) - though maybe it was so bad there wasn't resume. So if you opened the door before it thought it was time, you had to set it up again. ¯\_(ツ)_/¯