As mentioned above I uses and like the Jordan for several reasons. It is a direct mechanical connection between your brakes and the input to the controller. This means the trailer brakes work going forward, backwards, or at a dead stop, not something everyone thinks of when buying a controller, but it is a consideration when backing into some sites in the hilly areas or on the slippery slope.
The only short fall with the Jordan is that the cable travel between off and full on was designed to be 1 in., there is a spring inside the controller to allow for cable overtravel once the controller has applied full braking to the trailer. When used on GM products it is inpossible to mount the cable bracket to the brake arm high enough to get just 1 in. of travel and thus the Jordan will tend to lead the towing vehicle in brake application. I made a modification to equal the brake application. You can see it at http://mysite.verizon.net/vze54tx9/id7.html