There are dozens of companies that make kitchen and bath plumbing fixtures for the American market. Each year, more brands are added to the selection, making the process of choosing the right fixtures for a loyal customer base more complex. Professional plumbers are busy, so finding time to research newly developed fixture brands and styles is difficult.
Most pros have a select few brands they regularly use for different applications. People depend on the professionals to fix a problem the first time, and risking your reputation on faulty equipment is not worth saving a few bucks.