I used the Prodigy on the first boost setting until recently. I drive conservatively, no unusual hills or speeds.
A recent brake inspection revealed heavy wear on the brake magnets, and scores on the brake drum where the magnets ride.
These were brand new brakes on new axles, about 5000miles maximum on them. The linings are fine.
I also experienced grabby brakes, especially at slow speeds, or while driving in traffic. I now run with the boost setting off, and a little more brake power for normal braking. The diagnosis is that the Prodigy will slam the magnets too hard when the boost setting ( any of them ) is engaged and will cause pre-mature brake magnet and drum wear. I now recommend to NOT use any of the boost settings. I will also be looking for a different brake controller. After this last incident, I am less than pleased with the Prodigy.