Never buy appliances for how they look only for how they perform for your cooking style which usually means not all from the same maker in fact I would say there is no maker that makes everything well

I get that it won't be the best of all worlds, but I am also interested in an integrated design (e.g., same look) for the appliances.

I think you'd be a lot safer with GE Monogram for a consistent appearance and decent quality in every category with excellent features for price.