I have one and they are very unique indeed. They just plain work, track straight, even in high winds and the reduction is driving stress is huge. I am an avid road cyclist, and wind is my biggest enemy. They are built strong and heavy, mine is 22ft long, weighs just under 4klbs. It has an aluminum roof, and a bathroom that rivals 30+ footers.
Now the downside/ When you hit the button to lower them all has to be put away or else. I mean a bottle on the fridge and major damage. So if you are a slob, I would go to a conventional design.
Mine is being used as a portable office/camper and as a company we are going with a motorhome to transfer throughout the company. I like it, and would rcmnd to anyone, they make models with slides and up to 30 feet. Good luck.
2005 HI-LO 22T
2004 GMC XUV