Far as retrievers are concerned yeah, the bracket is the key. But, Gorlitz can be slightly off-center and still pull fine. Doesn't have to be EXACT, just close. Another thing to consider is parts and rebuild-ability. As far longevity, definitely a Gorlitz. But even they can be beaten down. New guys, unfamiliar with retrievers and how they work have a tendency to over crank the tension knob thereby killing the bearings prematurely.