Comments:  The BrakeSmart controller seemed to work well.  I noticed that the current display fluctuates, but this does not effect the trailer braking in any way.   The other minor irritation with the controller is that the buttons are not backlit.  The display looks great day or night, but you can't see the buttons at all at night.  This should not be much of a problem as you shouldn't need to mess with the settings once it is setup, but lighting them would be a nice product improvement.  To sum up my impression of the controller, I never felt the trailer drag the truck and I never felt the trailer push the truck when braking.  I could tell that there was 10,000 lbs behind the truck, but never in an adverse way.  What more could you ask of a brake controller, other than maybe a boost and EGT display (coming soon?).