Anyone Replaced The Integrated Brake Controller?

In my experience, people who have used add-on BC in the past are sometimes not happy with the IBC when they first get a new truck. They are used to the herky jerky function of the old BC, which in a way is confidence inspiring. Because you can tell it is obviously working. The IBC tend to be so smooth that you can hardly tell they are doing anything. Once that is figured out, it is pretty rare for anyone to want to go back to an aftermarket controller. But it does happen.