we just bought our 2619 today

hubby and i are so excited. we just ordered our 2007 2619 today. we have a tv 2005 kia sedona minivan. the dealer in hyannis mass is suggesting the wdh. we have both gotten a lot of different opinions about this. what do you guys think. also we are hearing that the journey brake controller is junk. true yes or no. we really appreciate hearing from other people who are actually out there towing tm's rather than maybe a dealer just trying to make some extra cash. now we just cant wait to get it!!! thanks to all in advance.