I had a Lux 1205 w/ PN1 & "Turbo Tool" rug washer (it was my mom's vac) for many yrs but when I moved I threw the vac b/c it was too beat up (but kept the tools & hose)  Later I got another 1205 from E-bay (w/ chrome PN2) & it seemed to have barely used but STILL in better shape than her original 1205.

Hi, I can only tell you what i use in my own home.  We use an electrolux silverardo with a p/n 7.  
The machine itself is 25 years old,i have serviced the machine,cordwinder, and automatic twice since new. the power nozzle,attachments and sidekick are off the shelf Aerus/electrolux parts. The standard home solutions aerus bags filter to 94% down to 0.3 microns. all in all the machine cleans to our satisfaction, the canister is bullit proof when used as specified and serviced every 8 to 10 years. the only draw back is the weight , but when the day comes that i have to take a nap after cleaning. I'll just hire a cleaning lady .
 
B.T.W. after being in the vacuum business for 35 years .When i get home the last thing on my mind is vacuums.........
 
Hope this helps you  
  O.T.