Most of them had reviews about how hard it is to make them stay in place with heavier monitors. I can't even imagine what happens if I forget to fix them very carefully before moving and break hard while moving.
But then, of course, I am half-joking. I actually did find myself doing that research but after realizing the sitcom scene I put myself in, I gave up quickly: I don't even have a driver's license, and I'm researching the monitor-mount situation for a caravan-life?!