My truck has an old Tekonsha in it that works great, but I don't know the model. I bought the Tekonsha IQ for the Jeep because it is easily removable to stash in a secure location when nit in use, and because it can be switched between vehicles easily so when the old one in the truck craps out I don't have to buy another one. I like it so far.
I thought Brooks had another thread about controllers, but it must be buried in another discussion.