Yep. All crevices eventually will get gunk, even if it's just residue from the soapy water you clean with. Vertical crevices, obviously, get gunkier faster, and are more unsightly, than horizontal crevices. With a totally flat stone counter, the horizontal crevices of the overhang are much smaller than even the most perfect fit of the flush mount.

But that's absolutes. In reality, both are pretty easy to keep clean and there's no reason not to put it the way you like it. A pointy bamboo disposable skewer can help with crevice gunk.

I would want the flush mount. I would worry something very heavy on the uneven edge would crack the glass...I would also prefer the slick look.

I too like the look of flush mount, but (and please correct me if I'm wrong) there isn't a standard size for the cooktops, so should you need to replace your cooktop in the future you will be more limited because of the cutout.

I think I've read too many bad reviews (not Miele, just appliances in general).

" I'm sure it would't be too difficult to change it if I want."

Famous last words.

And, ones that couldn't be farther from reality.

This technique is a big deal and why you don't see it everywhere. It is also not going to be able to be done with your tops installed in your kitchen - or at least not very well. They will have to be removed and this assumes that the the existing cutout is sized properly to allow for enough lip to support the top. And' I'd be surprised if there is enough now.

Thanks for the comments. Sounds like it's best to leave it as is.