No relation to seller, but I drove one of these Host rigs when it was new at Host in Bend, Oregon. With the narrow width and Duonic transmission it drove like a car in Bend rush hour traffic. I was impressed. We toured the Host factory and I was very impressed with the quality. The slideout supports, rollers, etc all look like they could support a tank crossing the Rhine. The frame is jig welded aluminum with 'roll of nickle' welds all done by humans. A huge amount of room with the sideout extended, but still a usable bed (accessible from the cab) with the slideout retracted. And under 30 seconds to open, so if you want to make a snack or used the lav on the road, no problemo.
If you want you can read my Expo Portal review from 2013
HERE
Best of luck with the sale.