I use a Brakesmart and an exhaust brake on my '06 Ram with 48RE automatic pulling trailers of varying size and weight almost daily to the tune of about 130k miles/year as an RV transporter. The truck and Brakesmart controller currently have over 191,000 miles on them. I used the same Brakesmart on my previous Dodge, an '01 with the NVG-5600 6 speed transmission and Jacobs Exhaust Brake for over 225,000 miles.
I am an absolutely devoted fan of the Brakesmart. It delivers precisely modulated and finely controlled trailer braking perfectly matched to the truck's braking in every situation regardless of the size, weight, and number of axles/brakes of the trailer being pulled. It requires no adjusting, tinkering, or maintenance. You simply connect the Tee fitting to a line out of the master cylinder, install the pressure transducer on the Tee fitting, plug the harness to the transducer, run the harness through the firewall, mount the controller under/on the dash, plug the controller into the factory tow package harness, make the initial setup adjustments, and enjoy its superb performance. Your trailer brakes will do exactly what your right foot asks them to do.
My Brakesmart controller has been in use on two trucks for over 400,000 miles and remains trouble-free. If it ever fails or develops a problem I will simply call Dr. Performance and either send it back for quick repair or order a replacement, whatever the price is at that time. Beyond the braking performance and confidence it provides it also provides a digital date and time readout, truck/trailer electrical system voltage readout, trailer brake current read, and other data on request.
The fact that there is now a competing brand of the same or similar design and performance is probably a good thing for users and potential users. Competition always produces better products at lower prices.
Harvey