I have a Nissan Xterra with a towing capacity of 5000lbs. I have the brake controller and the best hitch I could get. However, I will only haul shorter distances, prefer to stay away from a lot of hills, and only haul my own horse, would never haul two. You just have to know your vehicles limits. If you are going to haul with a mid-size SUV, I highly recommend the brake controller.