As a chronic comparison shopper, this is a first-world problem that's near and dear to my heart. I think the reason microwaves (and appliances in general) suck is because comparison shopping is so hard. I wish I could get a list of all microwaves and filter by criteria such as: - Does the +30 seconds button start cooking immediately, or do you have to also press "start" afterwards? - Does it beep every 30 seconds aft…
Buy a Panasonic. They seem to care about user experience. Beeps once, +30 starts it, and they're the only one with an inverter, so you can do a true 50% (unless I'm in a huge hurry I always cook at 50% for double the time, and it seems to come out much better).
And for the above poster, +30 starts it, it plays a little tune when done, and then every maybe 30s afterwards for 2 or 3 times. Oh, and the turntable rotates at 0.1Hz so a mug's handle is facing the same way it went in after any interval of ten seconds.