Fred- You may very well be right about the Royals in the 1960's, only you guys that were around then would know for sure

. Royal certainly has made improvements to the motor & brushroll over the years. I based my observation on my 1993 Royal Commercial 670CA, & my Royal Preferred 9100 from the early 1990's. Both have the 7-amp motor & brushroll with brush stiffeners, & take the Style B bag. I owned a Hoover Convertible from the late 1970's for a short while, as I had one given to me, & from what it performed like, the 2 Royals would absolutely DESTROY that Hoover on it's ability to clean carpets. I think the best ways to describe what Royals of today are like is it's like a Kirby on steroids, or a Turbocharged Kirby. And I love the fact that they are so much easier to push, as easy as my Kirby 519, yet they don't need a self-propelled transmission.
Gary: That same telescopic wand that the 89 used was also standard equipment with the AP100 when it was debuted in 1973 to replace the 89. Unfortunately, though, Electrolux switched to the standard wand setup with the AP200. Also, as much as I like the 89, I disagree with you on the handle....I have always felt that was the 89's biggest weakness & something the AP Series improved upon. And now, the 80 Series afterfilters are so thin, they don't offer much filtration....the AP afterfilters are much better in comparison. That would be a HUGE drawback for me, being an allergy sufferer, for the 89. In addition, the AP Series eliminated the pigtail cord on the hose, the AP100 introduced the new improved powerhead mid-run & the AP280 had the 2-speed motor switch, which would be ideal for anyone wanting to use it for situations that reduced motor speed is called for. And the issue of the AP Series hose being stiff, too short or having the rubber cuff on the handle end is practically eliminated, now that the new vinyl hoses are available, & the aftermarket version does have the switch that takes the place of the trigger switch. Speaking of which, another disadvantage for the 89 is that unless you know how to fabricate your own with an AP Series hose & 89 machine end, hoses are no longer available for the 89.
When I replied to Fred Nelson's answer to "If you could only have one cleaner" & his ideal combination, I was taking into account what would be an ideal combination for today's average consumer & their requirements & expectations. Gary, I totally agree with you, & I do prefer the 89 myself....but it wouldn't be as good for the average consumer in their homes, in my opinion. And that's just for 2 vintage cleaners....I still stand behind my statement that the Aerus Classic, which is the modern-day version of the AP Series, is an outdated design & Aerus needs to discontinue it. A Miele or Sebo would be a better contemporary choice.
Rob