Good point! I read early threads on that issue and thought it was from self clean feature. But you are right, I need to make sure and will revisit. We love the wolf steam combi and need to go with Wolf single WO since they will be stacked. Appliance salesperson said it'll look bad to mix brands if stacked. I wonder if anyone has done this and has a picture.

The new M ovens do not have the chipping issues according to my research but there is a known issue with a loud humming from the fans. Wolf is working on it and expected to release fix this quarter.

I have the 36" French door Sub-Zero. Almost 2 years in and very happy with it! No complaints!

I think your choices are great. Curious why you are going with the Wolf Combi/Steam stack over the Miele?

We tested both out. The Wolf is more user friendly to us. We don't like the extra steps of setting steam level, temp and time each time with Miele. The time having to be set the biggest drawback for us because it shuts off once time expires and you have to reset everything. Prob not a big deal when you eventually store your favorites and figure things out but initially it seems to be a pain.

We also liked the smooth bottom of the wolf vs the grooves in the Miele. Smooth is obviously easier to clean and with the water staying on bottom vs going to the reservoir in Miele, it seems easier to clean. At least that's what we saw in our demo. The Pirch chef kinda steered us towards the Wolf too but of course you take everything they say with a grain of salt.

Also, the Miele is much more techny and I just feel like more chances of parts going bad.