If you're having to wipe down the outside of your microwave more often than once every 2-4 weeks, you and I have very different cooking experiences.

Do you have over-the-range one? If not, that's probably the difference. If you do, I'm guessing you don't cook anything in oil very often?

If I have a choice, I'll never have an over the range microwave again. A counter microwave costs like $30-$100; over the range units cost like $400+; and they get really gross.

Got a built in Bosch one that happens to also be ... a regular oven. Handy to have two ovens sometimes

wipe down the outside? What do you mean? /s