Best constructed travel trailer

I think you hsould find after you look at some you like go to U tube and watch the videos on how they are made and see if they put good wood on the roof and other construction practices. My can of worms is the Keystone line. But in saying that I will caution you that building a RV is not rocket science so which ever one you think is the best is thrown together just like the other brands are. they rush the workers so much that you will find loose screws, saw dust, and other things in the unit at no extra charge. a good dealer will do a pre delivery inspection and repair what ever he finds. but they will miss somethings you can bet on that.