I now have 3 tow rigs and 5 or 6 trailers. 2 rigs have 6 pin plug ends and one only has a 4 flat. 2 trailers have 6 pin 2 have 4 flat and 2 have the RV 7. I got my first trailer with a 7 RV this summer and i was going to switch it to a 6 pin i have a adapter but i bought another trailer with a RV plug. I would like to make things a little simpler what would you do is the RV plug that much better?