I currently own a Holiday Rambler "Alumalite." 34'. I bought it new in 1997. I had owned 3 Airstreams before that. I found the fit and construction of the HR to be about the same as the AS and the appliances were largely the same brands. A couple of oddities that probably don't exist anymore, but the plug wiring on mine does not follow the "code" and has made plug repair a hassle. My unit is fairly heavy at 9,400 and HR put a "stock" suspension on it. It had plastic bushings! I replaced it all with bronze bushings and greaseable wet bolts. Not a big deal, but for the kind of money HRC wants, you'd think they could splurge $50 extra and put the top stuff in there in the first place. The low point drain valves quit after about 8 years. I replaced them myself, but since all the plumbing is put on with crimped fittings, (common these days) it required the purchase of a $100 crimping tool to make a factory type repair. A worm drive clamp won't work. All little things, but avoidable if the manuf. simply puts a little extra into the build.
Overall, we're pretty pleased with the HR but now that the family is gone, we are on the hunt for a slightly used AS again. We're just waiting to see what diesel is gonna do.