Trailer Brake Controlers

I have a 38 foot Montana 5th wheel and use a Pilot brake controller. Although I know my trailer is close to being overweight, I have noticed that my trailer just does not stop as fast as I would like and I have the controller maxed out.

I was thinking of switching out the controller cause it is almost 12 years old now.

What brake controllers do you use?

Just wondering,
Rodeoboy