I use a Tekonsha with mine, The inertial sensors work very well and have not
had to apply a lot of trailer braking but with the manual apply button it is easy
to use. My trailer has 4-wheel electric brakes and has been able to slow the bus considerably when needed. A little over a hundred bucks and running some wires to the back of the bus. I had to add a relay on my 24 volt brake lights to enable the electric brakes since they only come in 12 volt flavors.
The nice part is the indicator that tells you if the trailer is plugged in....