The two principle types of brake controllers out there are inertia and preprogrammed. But, like many other things in the RV business there are several other very clever and effective options. Of the predominate ones I prefer the inertia over the preprogrammed. The preprogrammed (e.g.
Drawtite and Reese) send out a predetermined amount of brake current based on time. No consideration is made for how much you need it or how fast. Not a universal answer to me. The inertia systems (e.g. Hayes Wheels and Tekonsha) apply current dependent on changes in forward
momentum. They start working as soon as you touch the brake pedal with a small current. That's how they can start to apply trailer brakes before tow vehicle. When going downhill the pendulum swings forward slightly making the controller more sensitive while going uphill the pendulum swings back slightly making it less sensitive. The controllers can be difficult to adjust occasionally. Over the years I have had hydraulic and electronic brake controllers. I prefer the electronic. The new Jordan sounds very intriguing. I have not had a chance to see one up close and personnel so will withhold comment beyond that. And yes Kelsey is the old company that made wheels and such in the old days.