We just got a 2018 Highland Ridge Open Range OF374BHS back in July of this year. We 1st saw a 2017, but that dealership did not want to deal and the unit was really walked thru and probably at many shows and had a lot of wear and tear in the unit itself.
We got a great deal at the dealership where we got the 2018, had 3 more max air covers installed. The unit is amaizing, knock on wood, no issues at all. The thermasats are a little quirky, we are just used to the more manual ones from our other TTs and HTTs.
Really enjoy the self leveling system and my only switch would be have the 2nd awning buttons (LED light and to retract/extend) to be in the main control panel with all of the other buttons. But again, very minor.
Dan