Virtually all Lux machines lasted for decades. They were extremely durable from 1912 onward. They had a few missteps such as the early automatic control system, the early 1205 wand, the early upright, and the early Diamond Jubilee. They always corrected the problems all the while innovating. Up until the early 1990's, Electrolux USA maintained #1 market share in canister vacuums. The decline started exactly with the rise of Walmart and the throw-away society. Many appliances became commodities rather than investments. I hate to say it, but it's true. Walmart nearly drove the quality companies out of business. The "poorer" population who had limited resources started running to Walmart every 2 years to buy a cheapo machine rather than paying a hefty price for something better. This has relegated the high-end companies largely to the high-end population. However, we probably don't know the true market share of the high-end companies because many of those sales of Bissell's and Eureka's are repeat buyers. All the homes with Kirby's, Filter Queen's, Tri-Star's, etc. keep those for far, far longer. Bissell will sell 10 vacuums during the average lifespan of 1 Kirby... Back to the Silverado... The Silverado is one of my favorite machines. The Diamond Jubilee had a faulty motor that proved not as reliable but the later one's switched to a better motor. I am not sure if the Silverado was affected by the faulty motor but they still seem to run like tanks. Speaking of Lux, Aerus has removed the Guardian Ultra from the website. I wonder if they are going to discontinue it or what?