Which WoWa are objectively the most stable?

Friends of stable cohesion. How do I get on such a topic? Quite simply, I want to be on the road with WoWa a lot. If necessary over stock and stone and this not only at the holiday time, but as often as possible. On big holidays I would like to finally go to Scandinavia and if it is too cold there, also across again to Spain. Maybe good that I have never sat during the ride in my home and the possible bends and sounds of my furniture I’ve been able to find out nothing in my Eifelland so far and maybe he’s still doing it … 100,000 km … but that’s all right, I can hardly imagine. On the other hand, there are constructions and materials today – think about Hymer with these (xy, at least no styrofoam) foam walls with the elegant edge joints, where I guess from hingucking, a higher stability, or even robustness. Gi is there any official or justified experience about stability or robustness in the different brands or models or sagor special versions? Greetings, cruise control