Traveler and Gateway are very close but Traveler is considered to be a higher brand in the eyes of most. In fact, the Traveler is closer to Big Country. Both come with a full-time warranty, Big Country has solid wood stiles vs wrapped stiles in the Traveler and neither have a rear cap. The Big Country has G range tires standard and the Traveler has F range. Then of course the options list is slightly bigger with Big Country.
Adding options on Bighorn Traveler would make it a Bighorn.
I can tell you the tank sizes are bigger than what you posted and it does have the
Solar pre-wire and the Solar Conduit. Pin boxes can be upgraded at any time which is nice and I will work with whatever manufacturer you decide to go with on getting a better price for anyone buying a new unit... Bighorn or Bighorn Traveler.
Talk Soon,
Tom