"one miele master chef oven"

Click the link below.

Just about everyone is happy with their Miele Speed ovens.
I have not, so far, seen many posts on the Miele Steam oven, but several folks like the "Plumbed Gaggenau Steam ovens".

I would go with the Miele DW's.

That is why, many of here, and probably most of us are not into the "Matchey Matchey"--IE all Miele ovens of one sort or another. We try to buy the best appliance for the job, and at least at, this point in time, the Miele "Regular Ovens" are "at best", a "Crapshoot"!

Gary

Here is a link that might be useful: Temperature problems