I believe that the Toyota hitch is one of the best looking hitches as it has a nice bend symmetry around the tailpipe that is also reflected on the other side. Aftermarket hitches often just slap in an ugly U bracket around the tail pipe.
The Toyota hitch also has a built in wiring harness that includes the trailer connector mounted nicely to a welded bracket.
Lastly, I am hopefully that Toyota's hitch will not flake off all its paint in a few years making the back of the Highlander look awful. I have much experience with aftermarket hitches and they typically turn to rust rather quickly. As the Highlander hitch is fully visible by necessity due to the spare tire, its appearance may be an important consideration.
