OP, not exactly the answer you're looking for, but this topic has been beaten to death over the years.
My personal experience. Went with a NAPA new unit (lifetime warranty). Per the literature inside the box, it was a Cardone unit in a NAPA box. Visual inspection showed it to be identical to the factory unit it was replacing. Only a metallurgical analysis would determine whether or not it was in fact made by the same mfg as Toyota's. Want to say it was in the $70 range at the time.