You need to do your research. Because a manufacturer/brand can make one product (sometimes just one item in a lineup) very well, but the rest of the products not so much. So a well designed kitchen with "prosumer" appliances will be a mix/match from a bunch of different brands.

I've stated earlier here that I've had Sub Zero refrigerators last 10-15+ years with mostly no maintenance, however you will spend around $7k at the low end. For kitchen appliances talk to chefs who work with these brands daily or read around their forums.

Most people don't want to do this or will vote with their wallet by buying something cheap that needs replacing in ~5 years.