When I was buying my TT, the salesman said they would throw in the WD Hitch as part of the deal. Knowing that dealers are not known for their generosity, I asked what kind of hitch they would use. The salesman said an equalizer hitch. Being the suspicious sort, I asked if I could see the box the "equalizer" hitch came in. He took me into the shop and showed me a pile of Fastway E2 hitches. I said thanks, but no thanks. I want a Reese Strait-Line hitch with Dual Cam. The dealer said it would be another $400, and I said OK.
I still think I made the right decision.
(When picking up the TT, they took my truck in the back to install and set up the WD hitch. After about 2 hours, the technician came out swearing. He said he hopes he never has to do another one of those _)(&(**& things again, but it was ready to go.)