We bought a new (last year 2016), 37 foot Forest River and I would never buy another. Thank goodness we have it on a permanent site and will never be towing it.
My guess is it would fall apart after several hundred miles.
Their workmanship is atrocious.
I have fixed most of the stuff myself but we have had seven pipes come apart at the connections at seven different times. The tech said every one of them was under stress due to the way they were installed,
and two of them were installed over the frame and then the trailer was installed on top of them.
When we first got it on site the bathroom door wouldn't close because it was hitting the door frame at the bottom. I gentle pulled the frame out to see how far up it needed glue. It came out all the way to the latch striker plate, so I removed the two screws holding the plate. The whole side piece fell down, and it was holding the overhead piece up which also fell down.
Every single bottom shelf in the entire trailer had no support in the back and collapsed if weight was put on them.
I could go on with a list that would fill several pages (defective water pump, valves and more)
This is our third trailer and each one has been larger than the first, so I am very familiar with the various features. We were caught up in the floor plan which is exactly what we wanted and should have paid more attention to the construction and quality.
Good luck on your decision
Jack L
Jack & Nanci