Thank you all for all the input. Too many choices. I have spent so much time online reading comments and reviews of all these different hitches. I've made my mind up and changed it a hand full of times. So...right now I am leaning toward an auto slide hitch, like a Pullrite or Demco. I have read varying stories of people with the 6'4" bed having either no problems at all or have had problems with cab/trailer clearance. If I didn't go with the auto slides, the B&W Companion slide looks nice too. I do like the look and finish if the OEM puck style but will probably end up with a rail system. (at least is what I am thinking for now). The price is a lot for these hitches but then i figure I just spent 50K on the truck plus the trailer price, I guess now is not the time to skimp on a hitch. Hopefully looking to make one purchase that will last a long time.
I will be towing more than not so the hitch will stay in the bed more than out of it, so even if its heavy, it won't be removed often. Thanks for all the links to the various hitches and accessories.
